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68505277 = 271449563
BaseRepresentation
bin1000001010101…
…00111010111101
311202220102120111
410011110322331
5120014132102
610444150021
71461166561
oct405247275
9152812514
1068505277
1135740035
121ab38311
1311267389
1491536a1
156032cd7
hex4154ebd

68505277 has 8 divisors (see below), whose sum is σ = 69033600. Its totient is φ = 67979520.

The previous prime is 68505263. The next prime is 68505299. The reversal of 68505277 is 77250586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68505277 - 211 = 68503229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68505677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121398 + ... + 121960.

It is an arithmetic number, because the mean of its divisors is an integer number (8629200).

Almost surely, 268505277 is an apocalyptic number.

It is an amenable number.

68505277 is a deficient number, since it is larger than the sum of its proper divisors (528323).

68505277 is a wasteful number, since it uses less digits than its factorization.

68505277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 68505277 is about 8276.7914677126. The cubic root of 68505277 is about 409.1739804171.

The spelling of 68505277 in words is "sixty-eight million, five hundred five thousand, two hundred seventy-seven".

Divisors: 1 271 449 563 121679 152573 252787 68505277