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6897345 = 3571331163
BaseRepresentation
bin11010010011111011000001
3110222102101020
4122103323001
53231203340
6403500053
7112424610
oct32237301
913872336
106897345
113991094
122387629
131576590
14cb7877
159139d0
hex693ec1

6897345 has 64 divisors (see below), whose sum is σ = 14106624. Its totient is φ = 2799360.

The previous prime is 6897299. The next prime is 6897347. The reversal of 6897345 is 5437986.

It is a happy number.

6897345 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6897345 - 29 = 6896833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6897297 and 6897306.

It is not an unprimeable number, because it can be changed into a prime (6897347) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42234 + ... + 42396.

It is an arithmetic number, because the mean of its divisors is an integer number (220416).

Almost surely, 26897345 is an apocalyptic number.

6897345 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6897345 is an abundant number, since it is smaller than the sum of its proper divisors (7209279).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6897345 is a wasteful number, since it uses less digits than its factorization.

6897345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222.

The product of its digits is 181440, while the sum is 42.

The square root of 6897345 is about 2626.2796880759. The cubic root of 6897345 is about 190.3534050382.

The spelling of 6897345 in words is "six million, eight hundred ninety-seven thousand, three hundred forty-five".

Divisors: 1 3 5 7 13 15 21 31 35 39 65 91 93 105 155 163 195 217 273 403 455 465 489 651 815 1085 1141 1209 1365 2015 2119 2445 2821 3255 3423 5053 5705 6045 6357 8463 10595 14105 14833 15159 17115 25265 31785 35371 42315 44499 65689 74165 75795 106113 176855 197067 222495 328445 459823 530565 985335 1379469 2299115 6897345