Search a number
-
+
68334331 = 134125359
BaseRepresentation
bin1000001001010…
…11001011111011
311202120202002011
410010223023323
5114443144311
610440350351
71456555312
oct404531373
9152522064
1068334331
113563365a
121aa753b7
1311207620
14910b279
155eec321
hex412b2fb

68334331 has 24 divisors (see below), whose sum is σ = 78155280. Its totient is φ = 59354880.

The previous prime is 68334313. The next prime is 68334341. The reversal of 68334331 is 13343386.

It is not a de Polignac number, because 68334331 - 211 = 68332283 is a prime.

It is a super-2 number, since 2×683343312 = 9339161586435122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68334293 and 68334302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68334341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1158180 + ... + 1158238.

It is an arithmetic number, because the mean of its divisors is an integer number (3256470).

Almost surely, 268334331 is an apocalyptic number.

68334331 is a deficient number, since it is larger than the sum of its proper divisors (9820949).

68334331 is a wasteful number, since it uses less digits than its factorization.

68334331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 166 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 68334331 is about 8266.4581895755. The cubic root of 68334331 is about 408.8333501278.

The spelling of 68334331 in words is "sixty-eight million, three hundred thirty-four thousand, three hundred thirty-one".

Divisors: 1 13 41 53 59 533 689 767 1681 2173 2419 3127 21853 28249 31447 40651 89093 99179 128207 1158209 1289327 1666691 5256487 68334331