91164867 has 4 divisors (see below), whose sum is σ = 121553160. Its totient is φ = 60776576.

The previous prime is 91164851. The next prime is 91164883. The reversal of 91164867 is 76846119.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (91164851) and next prime (91164883).

It is a cyclic number.

It is not a de Polignac number, because 91164867 - 2⁴ = 91164851 is a prime.

It is a super-2 number, since 2×91164867² = 16622065950255378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91164817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15194142 + ... + 15194147.

It is an arithmetic number, because the mean of its divisors is an integer number (30388290).

Almost surely, 2^91164867 is an apocalyptic number.

91164867 is a deficient number, since it is larger than the sum of its proper divisors (30388293).

91164867 is a wasteful number, since it uses less digits than its factorization.

91164867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30388292.

The product of its digits is 72576, while the sum is 42.

The square root of 91164867 is about 9548.0294825686. The cubic root of 91164867 is about 450.0656151235.

The spelling of 91164867 in words is "ninety-one million, one hundred sixty-four thousand, eight hundred sixty-seven".