74432666 has 36 divisors (see below), whose sum is σ = 142780554. Its totient is φ = 28995120.

The previous prime is 74432663. The next prime is 74432711. The reversal of 74432666 is 66623447.

It can be written as a sum of positive squares in only one way, i.e., 42837025 + 31595641 = 6545^2 + 5621^2 .

It is not an unprimeable number, because it can be changed into a prime (74432663) 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 17 ways as a sum of consecutive naturals, for example, 8720 + ... + 14996.

Almost surely, 2^74432666 is an apocalyptic number.

74432666 is a deficient number, since it is larger than the sum of its proper divisors (68347888).

74432666 is a wasteful number, since it uses less digits than its factorization.

74432666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6315 (or 6297 counting only the distinct ones).

The product of its digits is 145152, while the sum is 38.

The square root of 74432666 is about 8627.4368151844. The cubic root of 74432666 is about 420.6502889298.

The spelling of 74432666 in words is "seventy-four million, four hundred thirty-two thousand, six hundred sixty-six".