74664448 has 20 divisors (see below), whose sum is σ = 149184090. Its totient is φ = 37331968.

The previous prime is 74664437. The next prime is 74664449. The reversal of 74664448 is 84446647.

It can be written as a sum of positive squares in only one way, i.e., 72726784 + 1937664 = 8528^2 + 1392^2 .

It is not an unprimeable number, because it can be changed into a prime (74664449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72403 + ... + 73426.

Almost surely, 2^74664448 is an apocalyptic number.

It is an amenable number.

74664448 is a deficient number, since it is larger than the sum of its proper divisors (74519642).

74664448 is an equidigital number, since it uses as much as digits as its factorization.

74664448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145847 (or 145831 counting only the distinct ones).

The product of its digits is 516096, while the sum is 43.

The square root of 74664448 is about 8640.8592165363. The cubic root of 74664448 is about 421.0864689999.

The spelling of 74664448 in words is "seventy-four million, six hundred sixty-four thousand, four hundred forty-eight".