76984470666 has 12 divisors (see below), whose sum is σ = 166799686482. Its totient is φ = 25661490216.

The previous prime is 76984470569. The next prime is 76984470671. The reversal of 76984470666 is 66607448967.

It can be written as a sum of positive squares in only one way, i.e., 70160884641 + 6823586025 = 264879^2 + 82605^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2138457501 + ... + 2138457536.

Almost surely, 2^76984470666 is an apocalyptic number.

76984470666 is an abundant number, since it is smaller than the sum of its proper divisors (89815215816).

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

76984470666 is a wasteful number, since it uses less digits than its factorization.

76984470666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276915045 (or 4276915042 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 63.

The spelling of 76984470666 in words is "seventy-six billion, nine hundred eighty-four million, four hundred seventy thousand, six hundred sixty-six".