68875015 has 12 divisors (see below), whose sum is σ = 90847512. Its totient is φ = 50090480.

The previous prime is 68875003. The next prime is 68875063. The reversal of 68875015 is 51057886.

It is not a de Polignac number, because 68875015 - 2⁵ = 68874983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56317 + ... + 57526.

It is an arithmetic number, because the mean of its divisors is an integer number (7570626).

Almost surely, 2^68875015 is an apocalyptic number.

68875015 is a deficient number, since it is larger than the sum of its proper divisors (21972497).

68875015 is a wasteful number, since it uses less digits than its factorization.

68875015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113870 (or 113859 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 68875015 is about 8299.0972400617. The cubic root of 68875015 is about 409.9087939103.

The spelling of 68875015 in words is "sixty-eight million, eight hundred seventy-five thousand, fifteen".