86729864 has 32 divisors (see below), whose sum is σ = 175535640. Its totient is φ = 39936000.

The previous prime is 86729833. The next prime is 86729879. The reversal of 86729864 is 46892768.

It can be written as a sum of positive squares in 4 ways, for example, as 48413764 + 38316100 = 6958^2 + 6190^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66014 + ... + 67314.

Almost surely, 2^86729864 is an apocalyptic number.

It is an amenable number.

86729864 is an abundant number, since it is smaller than the sum of its proper divisors (88805776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86729864 is a wasteful number, since it uses less digits than its factorization.

86729864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961 (or 1957 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 86729864 is about 9312.8869852479. The cubic root of 86729864 is about 442.6456715539.

The spelling of 86729864 in words is "eighty-six million, seven hundred twenty-nine thousand, eight hundred sixty-four".