91612875 has 16 divisors (see below), whose sum is σ = 152444448. Its totient is φ = 48860000.

The previous prime is 91612867. The next prime is 91612877. The reversal of 91612875 is 57821619.

It is not a de Polignac number, because 91612875 - 2³ = 91612867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91612877) 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 15 ways as a sum of consecutive naturals, for example, 121776 + ... + 122525.

It is an arithmetic number, because the mean of its divisors is an integer number (9527778).

Almost surely, 2^91612875 is an apocalyptic number.

91612875 is a deficient number, since it is larger than the sum of its proper divisors (60831573).

91612875 is a wasteful number, since it uses less digits than its factorization.

91612875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244319 (or 244309 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 91612875 is about 9571.4614871502. The cubic root of 91612875 is about 450.8016574502.

The spelling of 91612875 in words is "ninety-one million, six hundred twelve thousand, eight hundred seventy-five".