86644986 has 8 divisors (see below), whose sum is σ = 173289984. Its totient is φ = 28881660.

The previous prime is 86644967. The next prime is 86645021. The reversal of 86644986 is 68944668.

It is a sphenic number, since it is the product of 3 distinct primes.

86644986 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7220410 + ... + 7220421.

It is an arithmetic number, because the mean of its divisors is an integer number (21661248).

Almost surely, 2^86644986 is an apocalyptic number.

86644986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

86644986 is a wasteful number, since it uses less digits than its factorization.

86644986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14440836.

The product of its digits is 1990656, while the sum is 51.

The square root of 86644986 is about 9308.3288510881. The cubic root of 86644986 is about 442.5012263364.

The spelling of 86644986 in words is "eighty-six million, six hundred forty-four thousand, nine hundred eighty-six".