68912664 has 16 divisors (see below), whose sum is σ = 172281720. Its totient is φ = 22970880.

The previous prime is 68912663. The next prime is 68912687. The reversal of 68912664 is 46621986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68912663) 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, 1435657 + ... + 1435704.

Almost surely, 2^68912664 is an apocalyptic number.

It is an amenable number.

68912664 is an abundant number, since it is smaller than the sum of its proper divisors (103369056).

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

68912664 is a wasteful number, since it uses less digits than its factorization.

68912664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871370 (or 2871366 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 68912664 is about 8301.3651889313. The cubic root of 68912664 is about 409.9834694902.

The spelling of 68912664 in words is "sixty-eight million, nine hundred twelve thousand, six hundred sixty-four".