91584516 has 12 divisors (see below), whose sum is σ = 213697232. Its totient is φ = 30528168.

The previous prime is 91584499. The next prime is 91584517. The reversal of 91584516 is 61548519.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (91584517) 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, 3816010 + ... + 3816033.

Almost surely, 2^91584516 is an apocalyptic number.

It is an amenable number.

91584516 is an abundant number, since it is smaller than the sum of its proper divisors (122112716).

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

91584516 is a wasteful number, since it uses less digits than its factorization.

91584516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7632050 (or 7632048 counting only the distinct ones).

The product of its digits is 43200, while the sum is 39.

The square root of 91584516 is about 9569.9799372830. The cubic root of 91584516 is about 450.7551370473.

The spelling of 91584516 in words is "ninety-one million, five hundred eighty-four thousand, five hundred sixteen".