91764256 has 12 divisors (see below), whose sum is σ = 180660942. Its totient is φ = 45882112.

The previous prime is 91764221. The next prime is 91764263. The reversal of 91764256 is 65246719.

It can be written as a sum of positive squares in only one way, i.e., 90554256 + 1210000 = 9516^2 + 1100^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1433785 + ... + 1433848.

Almost surely, 2^91764256 is an apocalyptic number.

It is an amenable number.

91764256 is a deficient number, since it is larger than the sum of its proper divisors (88896686).

91764256 is a wasteful number, since it uses less digits than its factorization.

91764256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867643 (or 2867635 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 91764256 is about 9579.3661585723. The cubic root of 91764256 is about 451.0498221762.

The spelling of 91764256 in words is "ninety-one million, seven hundred sixty-four thousand, two hundred fifty-six".