91644496 has 10 divisors (see below), whose sum is σ = 177561242. Its totient is φ = 45822240.

The previous prime is 91644493. The next prime is 91644517. The reversal of 91644496 is 69444619.

It can be written as a sum of positive squares in only one way, i.e., 62094400 + 29550096 = 7880^2 + 5436^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91644491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2863875 + ... + 2863906.

Almost surely, 2^91644496 is an apocalyptic number.

It is an amenable number.

91644496 is a deficient number, since it is larger than the sum of its proper divisors (85916746).

91644496 is a wasteful number, since it uses less digits than its factorization.

91644496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5727789 (or 5727783 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 91644496 is about 9573.1131822412. The cubic root of 91644496 is about 450.8535175535.

The spelling of 91644496 in words is "ninety-one million, six hundred forty-four thousand, four hundred ninety-six".