74991085 has 16 divisors (see below), whose sum is σ = 98977536. Its totient is φ = 54197568.

The previous prime is 74991083. The next prime is 74991089. The reversal of 74991085 is 58019947.

It is a cyclic number.

It is not a de Polignac number, because 74991085 - 2¹ = 74991083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74991083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9219 + ... + 15328.

It is an arithmetic number, because the mean of its divisors is an integer number (6186096).

Almost surely, 2^74991085 is an apocalyptic number.

It is an amenable number.

74991085 is a deficient number, since it is larger than the sum of its proper divisors (23986451).

74991085 is a wasteful number, since it uses less digits than its factorization.

74991085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24612.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 74991085 is about 8659.7393147831. The cubic root of 74991085 is about 421.6996226505.

The spelling of 74991085 in words is "seventy-four million, nine hundred ninety-one thousand, eighty-five".