74581684 has 12 divisors (see below), whose sum is σ = 131273604. Its totient is φ = 37074944.

The previous prime is 74581667. The next prime is 74581687. The reversal of 74581684 is 48618547.

It can be written as a sum of positive squares in 2 ways, for example, as 61779600 + 12802084 = 7860^2 + 3578^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 74581684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74581687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53197 + ... + 54580.

It is an arithmetic number, because the mean of its divisors is an integer number (10939467).

Almost surely, 2^74581684 is an apocalyptic number.

It is an amenable number.

74581684 is a deficient number, since it is larger than the sum of its proper divisors (56691920).

74581684 is a wasteful number, since it uses less digits than its factorization.

74581684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107954 (or 107952 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 74581684 is about 8636.0687815695. The cubic root of 74581684 is about 420.9308229215.

The spelling of 74581684 in words is "seventy-four million, five hundred eighty-one thousand, six hundred eighty-four".