91765113 has 8 divisors (see below), whose sum is σ = 133476576. Its totient is φ = 55615200.

The previous prime is 91765111. The next prime is 91765127. The reversal of 91765113 is 31156719.

It is a happy number.

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

It is not a de Polignac number, because 91765113 - 2¹ = 91765111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2780761 = 91765113 / (9 + 1 + 7 + 6 + 5 + 1 + 1 + 3).

It is not an unprimeable number, because it can be changed into a prime (91765111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390348 + ... + 1390413.

It is an arithmetic number, because the mean of its divisors is an integer number (16684572).

Almost surely, 2^91765113 is an apocalyptic number.

It is an amenable number.

91765113 is a deficient number, since it is larger than the sum of its proper divisors (41711463).

91765113 is a wasteful number, since it uses less digits than its factorization.

91765113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780775.

The product of its digits is 5670, while the sum is 33.

The square root of 91765113 is about 9579.4108900287. The cubic root of 91765113 is about 451.0512263122.

The spelling of 91765113 in words is "ninety-one million, seven hundred sixty-five thousand, one hundred thirteen".