86639168 has 56 divisors (see below), whose sum is σ = 214359744. Its totient is φ = 33753600.

The previous prime is 86639167. The next prime is 86639177. The reversal of 86639168 is 86193668.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (86639167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3863 + ... + 13718.

Almost surely, 2^86639168 is an apocalyptic number.

86639168 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

86639168 is an abundant number, since it is smaller than the sum of its proper divisors (127720576).

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

86639168 is a wasteful number, since it uses less digits than its factorization.

86639168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17611 (or 17601 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 86639168 is about 9308.0163300244. The cubic root of 86639168 is about 442.4913218211.

The spelling of 86639168 in words is "eighty-six million, six hundred thirty-nine thousand, one hundred sixty-eight".