91517616 has 60 divisors (see below), whose sum is σ = 256791600. Its totient is φ = 30426240.

The previous prime is 91517609. The next prime is 91517677. The reversal of 91517616 is 61671519.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 85726 + ... + 86786.

It is an arithmetic number, because the mean of its divisors is an integer number (4279860).

Almost surely, 2^91517616 is an apocalyptic number.

It is an amenable number.

91517616 is an abundant number, since it is smaller than the sum of its proper divisors (165273984).

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

91517616 is a wasteful number, since it uses less digits than its factorization.

91517616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674 (or 1665 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 91517616 is about 9566.4839936102. The cubic root of 91517616 is about 450.6453555196.

The spelling of 91517616 in words is "ninety-one million, five hundred seventeen thousand, six hundred sixteen".