91964745 has 24 divisors (see below), whose sum is σ = 163116096. Its totient is φ = 47906208.

The previous prime is 91964701. The next prime is 91964753. The reversal of 91964745 is 54746919.

91964745 is a `hidden beast` number, since 91 + 96 + 474 + 5 = 666.

It is not a de Polignac number, because 91964745 - 2¹¹ = 91962697 is a prime.

It is a super-3 number, since 3×91964745³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 91964745.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21829 + ... + 25698.

It is an arithmetic number, because the mean of its divisors is an integer number (6796504).

Almost surely, 2^91964745 is an apocalyptic number.

It is an amenable number.

91964745 is a deficient number, since it is larger than the sum of its proper divisors (71151351).

91964745 is a wasteful number, since it uses less digits than its factorization.

91964745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47581 (or 47578 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 91964745 is about 9589.8250766111. The cubic root of 91964745 is about 451.3780718064.

The spelling of 91964745 in words is "ninety-one million, nine hundred sixty-four thousand, seven hundred forty-five".