86694957 has 6 divisors (see below), whose sum is σ = 125226062. Its totient is φ = 57796632.

The previous prime is 86694953. The next prime is 86694991. The reversal of 86694957 is 75949668.

It can be written as a sum of positive squares in only one way, i.e., 78960996 + 7733961 = 8886^2 + 2781^2 .

It is not a de Polignac number, because 86694957 - 2² = 86694953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86694953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4816378 + ... + 4816395.

Almost surely, 2^86694957 is an apocalyptic number.

It is an amenable number.

86694957 is a deficient number, since it is larger than the sum of its proper divisors (38531105).

86694957 is a wasteful number, since it uses less digits than its factorization.

86694957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9632779 (or 9632776 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 86694957 is about 9311.0126731736. The cubic root of 86694957 is about 442.5862783024.

The spelling of 86694957 in words is "eighty-six million, six hundred ninety-four thousand, nine hundred fifty-seven".