91616806 has 4 divisors (see below), whose sum is σ = 137425212. Its totient is φ = 45808402.

The previous prime is 91616761. The next prime is 91616809. The reversal of 91616806 is 60861619.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91616809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22904200 + ... + 22904203.

It is an arithmetic number, because the mean of its divisors is an integer number (34356303).

Almost surely, 2^91616806 is an apocalyptic number.

91616806 is a deficient number, since it is larger than the sum of its proper divisors (45808406).

91616806 is a wasteful number, since it uses less digits than its factorization.

91616806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45808405.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 91616806 is about 9571.6668349875. Note that the first 3 decimals coincide. The cubic root of 91616806 is about 450.8081051465.

The spelling of 91616806 in words is "ninety-one million, six hundred sixteen thousand, eight hundred six".