68888907 has 8 divisors (see below), whose sum is σ = 102057680. Its totient is φ = 45925920.

The previous prime is 68888903. The next prime is 68888929. The reversal of 68888907 is 70988886.

It is not a de Polignac number, because 68888907 - 2² = 68888903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68888903) 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, 1275694 + ... + 1275747.

It is an arithmetic number, because the mean of its divisors is an integer number (12757210).

Almost surely, 2^68888907 is an apocalyptic number.

68888907 is a deficient number, since it is larger than the sum of its proper divisors (33168773).

68888907 is a wasteful number, since it uses less digits than its factorization.

68888907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551450 (or 2551444 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The square root of 68888907 is about 8299.9341563653. The cubic root of 68888907 is about 409.9363514126.

The spelling of 68888907 in words is "sixty-eight million, eight hundred eighty-eight thousand, nine hundred seven".