86694813 has 16 divisors (see below), whose sum is σ = 128597760. Its totient is φ = 57724128.

The previous prime is 86694799. The next prime is 86694857. The reversal of 86694813 is 31849668.

It is not a de Polignac number, because 86694813 - 2⁶ = 86694749 is a prime.

It is a super-2 number, since 2×86694813² = 15031981202209938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86694893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28156 + ... + 31082.

It is an arithmetic number, because the mean of its divisors is an integer number (8037360).

Almost surely, 2^86694813 is an apocalyptic number.

It is an amenable number.

86694813 is a deficient number, since it is larger than the sum of its proper divisors (41902947).

86694813 is a wasteful number, since it uses less digits than its factorization.

86694813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033 (or 4027 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 86694813 is about 9311.0049403918. The cubic root of 86694813 is about 442.5860332575.

The spelling of 86694813 in words is "eighty-six million, six hundred ninety-four thousand, eight hundred thirteen".