91809676 has 12 divisors (see below), whose sum is σ = 183619408. Its totient is φ = 39346992.

The previous prime is 91809671. The next prime is 91809709. The reversal of 91809676 is 67690819.

91809676 is an admirable number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (91809671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1639431 + ... + 1639486.

Almost surely, 2^91809676 is an apocalyptic number.

It is an amenable number.

91809676 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.

91809676 is a wasteful number, since it uses less digits than its factorization.

91809676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278928 (or 3278926 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 91809676 is about 9581.7365858178. The cubic root of 91809676 is about 451.1242277044.

It can be divided in two parts, 91809 and 676, that multiplied together give a square (62062884 = 7878²).

The spelling of 91809676 in words is "ninety-one million, eight hundred nine thousand, six hundred seventy-six".