68697915 has 32 divisors (see below), whose sum is σ = 129136896. Its totient is φ = 30744960.

The previous prime is 68697907. The next prime is 68697929. The reversal of 68697915 is 51979686.

It is not a de Polignac number, because 68697915 - 2³ = 68697907 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13869 + ... + 18158.

It is an arithmetic number, because the mean of its divisors is an integer number (4035528).

Almost surely, 2^68697915 is an apocalyptic number.

68697915 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68697915 is a deficient number, since it is larger than the sum of its proper divisors (60438981).

68697915 is a wasteful number, since it uses less digits than its factorization.

68697915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32059.

The product of its digits is 816480, while the sum is 51.

The square root of 68697915 is about 8288.4205371108. The cubic root of 68697915 is about 409.5571561982.

The spelling of 68697915 in words is "sixty-eight million, six hundred ninety-seven thousand, nine hundred fifteen".