91806495 has 16 divisors (see below), whose sum is σ = 160244352. Its totient is φ = 44512160.

The previous prime is 91806493. The next prime is 91806497. The reversal of 91806495 is 59460819.

It is an interprime number because it is at equal distance from previous prime (91806493) and next prime (91806497).

It is not a de Polignac number, because 91806495 - 2¹ = 91806493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91806493) 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 15 ways as a sum of consecutive naturals, for example, 278037 + ... + 278366.

It is an arithmetic number, because the mean of its divisors is an integer number (10015272).

Almost surely, 2^91806495 is an apocalyptic number.

91806495 is a deficient number, since it is larger than the sum of its proper divisors (68437857).

91806495 is a wasteful number, since it uses less digits than its factorization.

91806495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556422.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 91806495 is about 9581.5705915053. The cubic root of 91806495 is about 451.1190174956.

The spelling of 91806495 in words is "ninety-one million, eight hundred six thousand, four hundred ninety-five".