91797560 has 16 divisors (see below), whose sum is σ = 206544600. Its totient is φ = 36719008.

The previous prime is 91797551. The next prime is 91797583. The reversal of 91797560 is 6579719.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147430 + ... + 1147509.

Almost surely, 2^91797560 is an apocalyptic number.

It is an amenable number.

91797560 is an abundant number, since it is smaller than the sum of its proper divisors (114747040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91797560 is a wasteful number, since it uses less digits than its factorization.

91797560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294950 (or 2294946 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 91797560 is about 9581.1043204841. The cubic root of 91797560 is about 451.1043820779.

The spelling of 91797560 in words is "ninety-one million, seven hundred ninety-seven thousand, five hundred sixty".