91656165 has 8 divisors (see below), whose sum is σ = 146649888. Its totient is φ = 48883280.

The previous prime is 91656143. The next prime is 91656167. The reversal of 91656165 is 56165619.

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

It is not a de Polignac number, because 91656165 - 2¹⁰ = 91655141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91656167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3055191 + ... + 3055220.

It is an arithmetic number, because the mean of its divisors is an integer number (18331236).

Almost surely, 2^91656165 is an apocalyptic number.

It is an amenable number.

91656165 is a deficient number, since it is larger than the sum of its proper divisors (54993723).

91656165 is a wasteful number, since it uses less digits than its factorization.

91656165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110419.

The product of its digits is 48600, while the sum is 39.

The square root of 91656165 is about 9573.7226301998. The cubic root of 91656165 is about 450.8726523139.

It can be divided in two parts, 9165616 and 5, that added together give a triangular number (9165621 = T₄₂₈₁).

The spelling of 91656165 in words is "ninety-one million, six hundred fifty-six thousand, one hundred sixty-five".