91882568 has 12 divisors (see below), whose sum is σ = 172330665. Its totient is φ = 45927728.

The previous prime is 91882561. The next prime is 91882579. The reversal of 91882568 is 86528819.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 61434244 + 30448324 = 7838^2 + 5518^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6778.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91882561) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 25418 + ... + 28806.

Almost surely, 2^91882568 is an apocalyptic number.

It is an amenable number.

91882568 is a deficient number, since it is larger than the sum of its proper divisors (80448097).

91882568 is an frugal number, since it uses more digits than its factorization.

91882568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6784 (or 3391 counting only the distinct ones).

The product of its digits is 276480, while the sum is 47.

The square root of 91882568 is about 9585.5395257648. The cubic root of 91882568 is about 451.2435856701.

The spelling of 91882568 in words is "ninety-one million, eight hundred eighty-two thousand, five hundred sixty-eight".