74723668 has 12 divisors (see below), whose sum is σ = 131029920. Its totient is φ = 37286552.

The previous prime is 74723639. The next prime is 74723669. The reversal of 74723668 is 86632747.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74723669) 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, 16558 + ... + 20581.

It is an arithmetic number, because the mean of its divisors is an integer number (10919160).

Almost surely, 2^74723668 is an apocalyptic number.

It is an amenable number.

74723668 is a deficient number, since it is larger than the sum of its proper divisors (56306252).

74723668 is a wasteful number, since it uses less digits than its factorization.

74723668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37646 (or 37644 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The square root of 74723668 is about 8644.2852798829. The cubic root of 74723668 is about 421.1977676229.

The spelling of 74723668 in words is "seventy-four million, seven hundred twenty-three thousand, six hundred sixty-eight".