68612665 has 16 divisors (see below), whose sum is σ = 90351936. Its totient is φ = 49604800.

The previous prime is 68612653. The next prime is 68612671. The reversal of 68612665 is 56621686.

It is not a de Polignac number, because 68612665 - 2¹⁵ = 68579897 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 5910 + ... + 13120.

It is an arithmetic number, because the mean of its divisors is an integer number (5646996).

Almost surely, 2^68612665 is an apocalyptic number.

It is an amenable number.

68612665 is a deficient number, since it is larger than the sum of its proper divisors (21739271).

68612665 is a wasteful number, since it uses less digits than its factorization.

68612665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400.

The product of its digits is 103680, while the sum is 40.

The square root of 68612665 is about 8283.2762238139. The cubic root of 68612665 is about 409.3876741021.

The spelling of 68612665 in words is "sixty-eight million, six hundred twelve thousand, six hundred sixty-five".