91659745 has 8 divisors (see below), whose sum is σ = 111856320. Its totient is φ = 72084720.

The previous prime is 91659739. The next prime is 91659751. The reversal of 91659745 is 54795619.

It is an interprime number because it is at equal distance from previous prime (91659739) and next prime (91659751).

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

It is not a de Polignac number, because 91659745 - 2²³ = 83271137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91659695 and 91659704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155061 + ... + 155650.

It is an arithmetic number, because the mean of its divisors is an integer number (13982040).

Almost surely, 2^91659745 is an apocalyptic number.

It is an amenable number.

91659745 is a deficient number, since it is larger than the sum of its proper divisors (20196575).

91659745 is a wasteful number, since it uses less digits than its factorization.

91659745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310775.

The product of its digits is 340200, while the sum is 46.

The square root of 91659745 is about 9573.9095984869. The cubic root of 91659745 is about 450.8785224521.

The spelling of 91659745 in words is "ninety-one million, six hundred fifty-nine thousand, seven hundred forty-five".