68931552 has 48 divisors (see below), whose sum is σ = 188818560. Its totient is φ = 21977472.

The previous prime is 68931547. The next prime is 68931553. The reversal of 68931552 is 25513986.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×68931552² = 9503117722257408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68931552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68931553) 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, 13402 + ... + 17817.

It is an arithmetic number, because the mean of its divisors is an integer number (3933720).

Almost surely, 2^68931552 is an apocalyptic number.

It is an amenable number.

68931552 is an abundant number, since it is smaller than the sum of its proper divisors (119887008).

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

68931552 is a wasteful number, since it uses less digits than its factorization.

68931552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31255 (or 31247 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 68931552 is about 8302.5027551938. The cubic root of 68931552 is about 410.0209229854.

The spelling of 68931552 in words is "sixty-eight million, nine hundred thirty-one thousand, five hundred fifty-two".