86620650939 has 32 divisors (see below), whose sum is σ = 129722331200. Its totient is φ = 57120940800.

The previous prime is 86620650917. The next prime is 86620650997. The reversal of 86620650939 is 93905602668.

86620650939 is a `hidden beast` number, since 8 + 6 + 620 + 6 + 5 + 0 + 9 + 3 + 9 = 666.

It is not a de Polignac number, because 86620650939 - 2²⁷ = 86486433211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86620650839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1744257 + ... + 1793229.

It is an arithmetic number, because the mean of its divisors is an integer number (4053822850).

Almost surely, 2^86620650939 is an apocalyptic number.

86620650939 is a deficient number, since it is larger than the sum of its proper divisors (43101680261).

86620650939 is a wasteful number, since it uses less digits than its factorization.

86620650939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49692 (or 49686 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 86620650939 in words is "eighty-six billion, six hundred twenty million, six hundred fifty thousand, nine hundred thirty-nine".