91685063 has 8 divisors (see below), whose sum is σ = 97297200. Its totient is φ = 86097280.

The previous prime is 91685057. The next prime is 91685123. The reversal of 91685063 is 36058619.

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

It is a cyclic number.

It is not a de Polignac number, because 91685063 - 2⁴ = 91685047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91685003) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1988 + ... + 13686.

It is an arithmetic number, because the mean of its divisors is an integer number (12162150).

Almost surely, 2^91685063 is an apocalyptic number.

91685063 is a deficient number, since it is larger than the sum of its proper divisors (5612137).

91685063 is a wasteful number, since it uses less digits than its factorization.

91685063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12177.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 91685063 is about 9575.2317465427. The cubic root of 91685063 is about 450.9200321012.

The spelling of 91685063 in words is "ninety-one million, six hundred eighty-five thousand, sixty-three".