74985931 has 16 divisors (see below), whose sum is σ = 79728640. Its totient is φ = 70424640.

The previous prime is 74985919. The next prime is 74985941. The reversal of 74985931 is 13958947.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 74985931 - 2⁵ = 74985899 is a prime.

It is a super-2 number, since 2×74985931² = 11245779695873522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74985901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163855 + ... + 164311.

It is an arithmetic number, because the mean of its divisors is an integer number (4983040).

Almost surely, 2^74985931 is an apocalyptic number.

74985931 is a deficient number, since it is larger than the sum of its proper divisors (4742709).

74985931 is a wasteful number, since it uses less digits than its factorization.

74985931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634.

The product of its digits is 272160, while the sum is 46.

The square root of 74985931 is about 8659.4417256541. The cubic root of 74985931 is about 421.6899615481.

The spelling of 74985931 in words is "seventy-four million, nine hundred eighty-five thousand, nine hundred thirty-one".