91616012 has 24 divisors (see below), whose sum is σ = 164581200. Its totient is φ = 44606016.

The previous prime is 91616011. The next prime is 91616023. The reversal of 91616012 is 21061619.

It is not an unprimeable number, because it can be changed into a prime (91616011) 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, 27914 + ... + 31022.

It is an arithmetic number, because the mean of its divisors is an integer number (6857550).

Almost surely, 2^91616012 is an apocalyptic number.

It is an amenable number.

91616012 is a deficient number, since it is larger than the sum of its proper divisors (72965188).

91616012 is a wasteful number, since it uses less digits than its factorization.

91616012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305 (or 3303 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 91616012 is about 9571.6253583182. The cubic root of 91616012 is about 450.8068028284.

The spelling of 91616012 in words is "ninety-one million, six hundred sixteen thousand, twelve".