74043668 has 6 divisors (see below), whose sum is σ = 129576426. Its totient is φ = 37021832.

The previous prime is 74043649. The next prime is 74043677. The reversal of 74043668 is 86634047.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 45185284 + 28858384 = 6722^2 + 5372^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9255455 + ... + 9255462.

It is an arithmetic number, because the mean of its divisors is an integer number (21596071).

Almost surely, 2^74043668 is an apocalyptic number.

It is an amenable number.

74043668 is a deficient number, since it is larger than the sum of its proper divisors (55532758).

74043668 is a wasteful number, since it uses less digits than its factorization.

74043668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18510921 (or 18510919 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 74043668 is about 8604.8630436515. The cubic root of 74043668 is about 419.9162115547.

The spelling of 74043668 in words is "seventy-four million, forty-three thousand, six hundred sixty-eight".