91516608 has 112 divisors (see below), whose sum is σ = 271393920. Its totient is φ = 30240000.

The previous prime is 91516583. The next prime is 91516631. The reversal of 91516608 is 80661519.

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 15 ways as a sum of consecutive naturals, for example, 364483 + ... + 364733.

It is an arithmetic number, because the mean of its divisors is an integer number (2423160).

Almost surely, 2^91516608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91516608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135696960).

91516608 is an abundant number, since it is smaller than the sum of its proper divisors (179877312).

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

91516608 is a wasteful number, since it uses less digits than its factorization.

91516608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 91516608 is about 9566.4313095323. The cubic root of 91516608 is about 450.6437010032.

The spelling of 91516608 in words is "ninety-one million, five hundred sixteen thousand, six hundred eight".