76666474 has 16 divisors (see below), whose sum is σ = 118983816. Its totient is φ = 37024000.

The previous prime is 76666453. The next prime is 76666477. The reversal of 76666474 is 47466667.

It can be written as a sum of positive squares in 4 ways, for example, as 48650625 + 28015849 = 6975^2 + 5293^2 .

It is not an unprimeable number, because it can be changed into a prime (76666477) 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 7 ways as a sum of consecutive naturals, for example, 3654 + ... + 12910.

Almost surely, 2^76666474 is an apocalyptic number.

76666474 is a deficient number, since it is larger than the sum of its proper divisors (42317342).

76666474 is a wasteful number, since it uses less digits than its factorization.

76666474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9401.

The product of its digits is 1016064, while the sum is 46.

The square root of 76666474 is about 8755.9393556602. The cubic root of 76666474 is about 424.8169435411.

The spelling of 76666474 in words is "seventy-six million, six hundred sixty-six thousand, four hundred seventy-four".