91696977 has 24 divisors (see below), whose sum is σ = 137779200. Its totient is φ = 58703040.

The previous prime is 91696961. The next prime is 91696981. The reversal of 91696977 is 77969619.

It is not a de Polignac number, because 91696977 - 2⁴ = 91696961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91696177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37024 + ... + 39422.

It is an arithmetic number, because the mean of its divisors is an integer number (5740800).

Almost surely, 2^91696977 is an apocalyptic number.

It is an amenable number.

91696977 is a deficient number, since it is larger than the sum of its proper divisors (46082223).

91696977 is a wasteful number, since it uses less digits than its factorization.

91696977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573 (or 2570 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The square root of 91696977 is about 9575.8538522682. The cubic root of 91696977 is about 450.9395628310.

The spelling of 91696977 in words is "ninety-one million, six hundred ninety-six thousand, nine hundred seventy-seven".