91108713 has 8 divisors (see below), whose sum is σ = 121571776. Its totient is φ = 60692400.

The previous prime is 91108711. The next prime is 91108739. The reversal of 91108713 is 31780119.

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

It is not a de Polignac number, because 91108713 - 2¹ = 91108711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91108711) 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, 6853 + ... + 15138.

It is an arithmetic number, because the mean of its divisors is an integer number (15196472).

Almost surely, 2^91108713 is an apocalyptic number.

It is an amenable number.

91108713 is a deficient number, since it is larger than the sum of its proper divisors (30463063).

91108713 is a wasteful number, since it uses less digits than its factorization.

91108713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23375.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 91108713 is about 9545.0884228487. The cubic root of 91108713 is about 449.9731885260.

The spelling of 91108713 in words is "ninety-one million, one hundred eight thousand, seven hundred thirteen".