74639332804 has 9 divisors (see below), whose sum is σ = 130619788621. Its totient is φ = 37319393200.

The previous prime is 74639332787. The next prime is 74639332829. The reversal of 74639332804 is 40823393647.

It is a happy number.

The square root of 74639332804 is 273202.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 22289892804 + 52349440000 = 149298^2 + 228800^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 478104 + ... + 614704.

Almost surely, 2^74639332804 is an apocalyptic number.

74639332804 is the 273202-nd square number.

It is an amenable number.

74639332804 is a deficient number, since it is larger than the sum of its proper divisors (55980455817).

74639332804 is an frugal number, since it uses more digits than its factorization.

74639332804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273206 (or 136603 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 49.

Multiplying 74639332804 by its sum of digits (49), we get a square (3657327307396 = 1912414²).

The spelling of 74639332804 in words is "seventy-four billion, six hundred thirty-nine million, three hundred thirty-two thousand, eight hundred four".