86632813 has 4 divisors (see below), whose sum is σ = 86713600. Its totient is φ = 86552028.

The previous prime is 86632801. The next prime is 86632849. The reversal of 86632813 is 31823668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86632813 - 2⁵ = 86632781 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 (86632853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38763 + ... + 40936.

It is an arithmetic number, because the mean of its divisors is an integer number (21678400).

Almost surely, 2^86632813 is an apocalyptic number.

It is an amenable number.

86632813 is a deficient number, since it is larger than the sum of its proper divisors (80787).

86632813 is a wasteful number, since it uses less digits than its factorization.

86632813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80786.

The product of its digits is 41472, while the sum is 37.

The square root of 86632813 is about 9307.6749513506. The cubic root of 86632813 is about 442.4805026148.

It can be divided in two parts, 8663 and 2813, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 86632813 in words is "eighty-six million, six hundred thirty-two thousand, eight hundred thirteen".