88686813 has 32 divisors (see below), whose sum is σ = 128903040. Its totient is φ = 54051840.

The previous prime is 88686799. The next prime is 88686821. The reversal of 88686813 is 31868688.

It is a happy number.

It is not a de Polignac number, because 88686813 - 2⁶ = 88686749 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88686613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320031 + ... + 320307.

It is an arithmetic number, because the mean of its divisors is an integer number (4028220).

Almost surely, 2^88686813 is an apocalyptic number.

It is an amenable number.

88686813 is a deficient number, since it is larger than the sum of its proper divisors (40216227).

88686813 is a wasteful number, since it uses less digits than its factorization.

88686813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477.

The product of its digits is 442368, while the sum is 48.

The square root of 88686813 is about 9417.3676258284. The cubic root of 88686813 is about 445.9501861422.

The spelling of 88686813 in words is "eighty-eight million, six hundred eighty-six thousand, eight hundred thirteen".