74485664 has 36 divisors (see below), whose sum is σ = 161195202. Its totient is φ = 33855360.

The previous prime is 74485657. The next prime is 74485693. The reversal of 74485664 is 46658447.

It can be written as a sum of positive squares in only one way, i.e., 72114064 + 2371600 = 8492^2 + 1540^2 .

It is a super-2 number, since 2×74485664² = 11096228283041792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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 in 5 ways as a sum of consecutive naturals, for example, 5747 + ... + 13490.

Almost surely, 2^74485664 is an apocalyptic number.

It is an amenable number.

74485664 is an abundant number, since it is smaller than the sum of its proper divisors (86709538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74485664 is a wasteful number, since it uses less digits than its factorization.

74485664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19269 (or 19250 counting only the distinct ones).

The product of its digits is 645120, while the sum is 44.

The square root of 74485664 is about 8630.5077486785. The cubic root of 74485664 is about 420.7501032366.

The spelling of 74485664 in words is "seventy-four million, four hundred eighty-five thousand, six hundred sixty-four".