91370656 has 48 divisors (see below), whose sum is σ = 194745600. Its totient is φ = 41948928.

The previous prime is 91370611. The next prime is 91370701. The reversal of 91370656 is 65607319.

It is an interprime number because it is at equal distance from previous prime (91370611) and next prime (91370701).

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 in 7 ways as a sum of consecutive naturals, for example, 98965 + ... + 99883.

It is an arithmetic number, because the mean of its divisors is an integer number (4057200).

Almost surely, 2^91370656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91370656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97372800).

91370656 is an abundant number, since it is smaller than the sum of its proper divisors (103374944).

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

91370656 is a wasteful number, since it uses less digits than its factorization.

91370656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 91370656 is about 9558.7999246767. The cubic root of 91370656 is about 450.4040091892.

The spelling of 91370656 in words is "ninety-one million, three hundred seventy thousand, six hundred fifty-six".