91612512 has 48 divisors (see below), whose sum is σ = 267205680. Its totient is φ = 30537216.

The previous prime is 91612459. The next prime is 91612513. The reversal of 91612512 is 21521619.

91612512 is a `hidden beast` number, since 91 + 61 + 2 + 512 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91612513) 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, 52153 + ... + 53880.

It is an arithmetic number, because the mean of its divisors is an integer number (5566785).

Almost surely, 2^91612512 is an apocalyptic number.

It is an amenable number.

91612512 is an abundant number, since it is smaller than the sum of its proper divisors (175593168).

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

91612512 is a wasteful number, since it uses less digits than its factorization.

91612512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106052 (or 106038 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 91612512 is about 9571.4425245101. The cubic root of 91612512 is about 450.8010620419.

The spelling of 91612512 in words is "ninety-one million, six hundred twelve thousand, five hundred twelve".