91568 has 20 divisors (see below), whose sum is σ = 182280. Its totient is φ = 44544.

The previous prime is 91541. The next prime is 91571. The reversal of 91568 is 86519.

It is a self number, because there is not a number n which added to its sum of digits gives 91568.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896 + ... + 992.

It is an arithmetic number, because the mean of its divisors is an integer number (9114).

2⁹¹⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

91568 is a deficient number, since it is larger than the sum of its proper divisors (90712).

91568 is a wasteful number, since it uses less digits than its factorization.

91568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 158 counting only the distinct ones).

The product of its digits is 2160, while the sum is 29.

The square root of 91568 is about 302.6020489025. The cubic root of 91568 is about 45.0728039601.

The spelling of 91568 in words is "ninety-one thousand, five hundred sixty-eight".