91656359 has 2 divisors, whose sum is σ = 91656360. Its totient is φ = 91656358.

The previous prime is 91656347. The next prime is 91656379. The reversal of 91656359 is 95365619.

It is a weak prime.

It is an emirp because it is prime and its reverse (95365619) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91656359 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91656379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45828179 + 45828180.

It is an arithmetic number, because the mean of its divisors is an integer number (45828180).

Almost surely, 2^91656359 is an apocalyptic number.

91656359 is a deficient number, since it is larger than the sum of its proper divisors (1).

91656359 is an equidigital number, since it uses as much as digits as its factorization.

91656359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 218700, while the sum is 44.

The square root of 91656359 is about 9573.7327620944. The cubic root of 91656359 is about 450.8729704202.

It can be divided in two parts, 916 and 56359, that added together give a palindrome (57275).

The spelling of 91656359 in words is "ninety-one million, six hundred fifty-six thousand, three hundred fifty-nine".