91610880 has 72 divisors (see below), whose sum is σ = 292594512. Its totient is φ = 24428544.

The previous prime is 91610879. The next prime is 91610881. The reversal of 91610880 is 8801619.

It is an interprime number because it is at equal distance from previous prime (91610879) and next prime (91610881).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91610881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8089 + ... + 15768.

Almost surely, 2^91610880 is an apocalyptic number.

It is an amenable number.

91610880 is an abundant number, since it is smaller than the sum of its proper divisors (200983632).

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

91610880 is a wasteful number, since it uses less digits than its factorization.

91610880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23881 (or 23867 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 91610880 is about 9571.3572705233. The cubic root of 91610880 is about 450.7983851451.

The spelling of 91610880 in words is "ninety-one million, six hundred ten thousand, eight hundred eighty".