86216864 has 36 divisors (see below), whose sum is σ = 172134522. Its totient is φ = 42506880.

The previous prime is 86216861. The next prime is 86216899. The reversal of 86216864 is 46861268.

It can be written as a sum of positive squares in only one way, i.e., 79352464 + 6864400 = 8908^2 + 2620^2 .

It is not an unprimeable number, because it can be changed into a prime (86216861) 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, 549074 + ... + 549230.

Almost surely, 2^86216864 is an apocalyptic number.

It is an amenable number.

86216864 is a deficient number, since it is larger than the sum of its proper divisors (85917658).

86216864 is a wasteful number, since it uses less digits than its factorization.

86216864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 290 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 86216864 is about 9285.3036568547. The cubic root of 86216864 is about 441.7712075941.

The spelling of 86216864 in words is "eighty-six million, two hundred sixteen thousand, eight hundred sixty-four".