91368855 has 12 divisors (see below), whose sum is σ = 158372760. Its totient is φ = 48730032.

The previous prime is 91368803. The next prime is 91368881. The reversal of 91368855 is 55886319.

It is not a de Polignac number, because 91368855 - 2⁶ = 91368791 is a prime.

It is a super-2 number, since 2×91368855² = 16696535328022050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2030419 = 91368855 / (9 + 1 + 3 + 6 + 8 + 8 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 91368855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1015165 + ... + 1015254.

It is an arithmetic number, because the mean of its divisors is an integer number (13197730).

Almost surely, 2^91368855 is an apocalyptic number.

91368855 is a deficient number, since it is larger than the sum of its proper divisors (67003905).

91368855 is a wasteful number, since it uses less digits than its factorization.

91368855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030430 (or 2030427 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 91368855 is about 9558.7057178260. The cubic root of 91368855 is about 450.4010498768.

The spelling of 91368855 in words is "ninety-one million, three hundred sixty-eight thousand, eight hundred fifty-five".