91816713 has 16 divisors (see below), whose sum is σ = 141939840. Its totient is φ = 58549392.

The previous prime is 91816687. The next prime is 91816729. The reversal of 91816713 is 31761819.

It is not a de Polignac number, because 91816713 - 2⁶ = 91816649 is a prime.

It is a super-2 number, since 2×91816713² = 16860617572248738, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91816783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73306 + ... + 74547.

It is an arithmetic number, because the mean of its divisors is an integer number (8871240).

Almost surely, 2^91816713 is an apocalyptic number.

It is an amenable number.

91816713 is a deficient number, since it is larger than the sum of its proper divisors (50123127).

91816713 is a wasteful number, since it uses less digits than its factorization.

91816713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147885 (or 147879 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 91816713 is about 9582.1037877911. The cubic root of 91816713 is about 451.1357532872.

It can be divided in two parts, 91816 and 713, that added together give a palindrome (92529).

The spelling of 91816713 in words is "ninety-one million, eight hundred sixteen thousand, seven hundred thirteen".