91130656 has 12 divisors (see below), whose sum is σ = 179413542. Its totient is φ = 45565312.

The previous prime is 91130639. The next prime is 91130671. The reversal of 91130656 is 65603119.

It can be written as a sum of positive squares in only one way, i.e., 68890000 + 22240656 = 8300^2 + 4716^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1423885 + ... + 1423948.

Almost surely, 2^91130656 is an apocalyptic number.

It is an amenable number.

91130656 is a deficient number, since it is larger than the sum of its proper divisors (88282886).

91130656 is a wasteful number, since it uses less digits than its factorization.

91130656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847843 (or 2847835 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 91130656 is about 9546.2377929737. The cubic root of 91130656 is about 450.0093100954.

The spelling of 91130656 in words is "ninety-one million, one hundred thirty thousand, six hundred fifty-six".