68557912 has 16 divisors (see below), whose sum is σ = 128817360. Its totient is φ = 34206624.

The previous prime is 68557901. The next prime is 68557919. The reversal of 68557912 is 21975586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68557919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4903 + ... + 12694.

It is an arithmetic number, because the mean of its divisors is an integer number (8051085).

Almost surely, 2^68557912 is an apocalyptic number.

It is an amenable number.

68557912 is a deficient number, since it is larger than the sum of its proper divisors (60259448).

68557912 is a wasteful number, since it uses less digits than its factorization.

68557912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18090 (or 18086 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The square root of 68557912 is about 8279.9705313485. The cubic root of 68557912 is about 409.2787478156.

The spelling of 68557912 in words is "sixty-eight million, five hundred fifty-seven thousand, nine hundred twelve".