91716906 has 16 divisors (see below), whose sum is σ = 184167648. Its totient is φ = 30450000.

The previous prime is 91716883. The next prime is 91716907. The reversal of 91716906 is 60961719.

It is not an unprimeable number, because it can be changed into a prime (91716907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28945 + ... + 31956.

It is an arithmetic number, because the mean of its divisors is an integer number (11510478).

Almost surely, 2^91716906 is an apocalyptic number.

91716906 is an abundant number, since it is smaller than the sum of its proper divisors (92450742).

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

91716906 is a wasteful number, since it uses less digits than its factorization.

91716906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61157.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 91716906 is about 9576.8943817920. The cubic root of 91716906 is about 450.9722288428.

The spelling of 91716906 in words is "ninety-one million, seven hundred sixteen thousand, nine hundred six".