91685382 has 8 divisors (see below), whose sum is σ = 183370776. Its totient is φ = 30561792.

The previous prime is 91685359. The next prime is 91685423. The reversal of 91685382 is 28358619.

It is a sphenic number, since it is the product of 3 distinct primes.

91685382 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 7640443 + ... + 7640454.

It is an arithmetic number, because the mean of its divisors is an integer number (22921347).

Almost surely, 2^91685382 is an apocalyptic number.

91685382 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91685382 is a wasteful number, since it uses less digits than its factorization.

91685382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15280902.

The product of its digits is 103680, while the sum is 42.

The square root of 91685382 is about 9575.2484040885. The cubic root of 91685382 is about 450.9205550629.

The spelling of 91685382 in words is "ninety-one million, six hundred eighty-five thousand, three hundred eighty-two".