91667313 has 6 divisors (see below), whose sum is σ = 132408354. Its totient is φ = 61111536.

The previous prime is 91667287. The next prime is 91667321. The reversal of 91667313 is 31376619.

It can be written as a sum of positive squares in only one way, i.e., 77739489 + 13927824 = 8817^2 + 3732^2 .

It is not a de Polignac number, because 91667313 - 2¹² = 91663217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91667363) 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 5 ways as a sum of consecutive naturals, for example, 5092620 + ... + 5092637.

It is an arithmetic number, because the mean of its divisors is an integer number (22068059).

Almost surely, 2^91667313 is an apocalyptic number.

It is an amenable number.

91667313 is a deficient number, since it is larger than the sum of its proper divisors (40741041).

91667313 is a wasteful number, since it uses less digits than its factorization.

91667313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10185263 (or 10185260 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 91667313 is about 9574.3048311614. The cubic root of 91667313 is about 450.8909312245.

The spelling of 91667313 in words is "ninety-one million, six hundred sixty-seven thousand, three hundred thirteen".