7866994672 has 20 divisors (see below), whose sum is σ = 15252626200. Its totient is φ = 3930833088.

The previous prime is 7866994657. The next prime is 7866994693. The reversal of 7866994672 is 2764996687.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142047 + ... + 189502.

It is an arithmetic number, because the mean of its divisors is an integer number (762631310).

Almost surely, 2^7866994672 is an apocalyptic number.

It is an amenable number.

7866994672 is a deficient number, since it is larger than the sum of its proper divisors (7385631528).

7866994672 is a wasteful number, since it uses less digits than its factorization.

7866994672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333040 (or 333034 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 64.

The square root of 7866994672 is about 88696.0803643543. The cubic root of 7866994672 is about 1988.8542238892.

The spelling of 7866994672 in words is "seven billion, eight hundred sixty-six million, nine hundred ninety-four thousand, six hundred seventy-two".