68531860 has 24 divisors (see below), whose sum is σ = 151492320. Its totient is φ = 25969824.

The previous prime is 68531857. The next prime is 68531873. The reversal of 68531860 is 6813586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89794 + ... + 90553.

It is an arithmetic number, because the mean of its divisors is an integer number (6312180).

Almost surely, 2^68531860 is an apocalyptic number.

It is an amenable number.

68531860 is an abundant number, since it is smaller than the sum of its proper divisors (82960460).

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

68531860 is a wasteful number, since it uses less digits than its factorization.

68531860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180375 (or 180373 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 68531860 is about 8278.3971878619. The cubic root of 68531860 is about 409.2268992859.

The spelling of 68531860 in words is "sixty-eight million, five hundred thirty-one thousand, eight hundred sixty".