91267864 has 32 divisors (see below), whose sum is σ = 179820000. Its totient is φ = 43343872.

The previous prime is 91267861. The next prime is 91267871. The reversal of 91267864 is 46876219.

It is a self number, because there is not a number n which added to its sum of digits gives 91267864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91267861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25752 + ... + 29080.

It is an arithmetic number, because the mean of its divisors is an integer number (5619375).

Almost surely, 2^91267864 is an apocalyptic number.

It is an amenable number.

91267864 is a deficient number, since it is larger than the sum of its proper divisors (88552136).

91267864 is a wasteful number, since it uses less digits than its factorization.

91267864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507 (or 3503 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 91267864 is about 9553.4215860078. The cubic root of 91267864 is about 450.2350442883.

The spelling of 91267864 in words is "ninety-one million, two hundred sixty-seven thousand, eight hundred sixty-four".