74149664 has 24 divisors (see below), whose sum is σ = 146222748. Its totient is φ = 37013760.

The previous prime is 74149661. The next prime is 74149681. The reversal of 74149664 is 46694147.

It can be written as a sum of positive squares in 2 ways, for example, as 65739664 + 8410000 = 8108^2 + 2900^2 .

It is not an unprimeable number, because it can be changed into a prime (74149661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22694 + ... + 25754.

Almost surely, 2^74149664 is an apocalyptic number.

It is an amenable number.

74149664 is a deficient number, since it is larger than the sum of its proper divisors (72073084).

74149664 is a wasteful number, since it uses less digits than its factorization.

74149664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828 (or 3820 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 74149664 is about 8611.0199163630. The cubic root of 74149664 is about 420.1164907409.

It can be divided in two parts, 741 and 49664, that added together give a palindrome (50405).

The spelling of 74149664 in words is "seventy-four million, one hundred forty-nine thousand, six hundred sixty-four".