86643954 has 24 divisors (see below), whose sum is σ = 188886672. Its totient is φ = 28703160.

The previous prime is 86643943. The next prime is 86644007. The reversal of 86643954 is 45934668.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11832 + ... + 17699.

It is an arithmetic number, because the mean of its divisors is an integer number (7870278).

Almost surely, 2^86643954 is an apocalyptic number.

86643954 is an abundant number, since it is smaller than the sum of its proper divisors (102242718).

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

86643954 is a wasteful number, since it uses less digits than its factorization.

86643954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29702 (or 29699 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 86643954 is about 9308.2734166976. The cubic root of 86643954 is about 442.4994695005.

The spelling of 86643954 in words is "eighty-six million, six hundred forty-three thousand, nine hundred fifty-four".