91866160 has 20 divisors (see below), whose sum is σ = 213589008. Its totient is φ = 36746432.

The previous prime is 91866149. The next prime is 91866167. The reversal of 91866160 is 6166819.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (91866167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574084 + ... + 574243.

Almost surely, 2^91866160 is an apocalyptic number.

It is an amenable number.

91866160 is an abundant number, since it is smaller than the sum of its proper divisors (121722848).

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

91866160 is a wasteful number, since it uses less digits than its factorization.

91866160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148340 (or 1148334 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 91866160 is about 9584.6836150183. The cubic root of 91866160 is about 451.2167236814.

The spelling of 91866160 in words is "ninety-one million, eight hundred sixty-six thousand, one hundred sixty".