8079066640 has 40 divisors (see below), whose sum is σ = 18788237208. Its totient is φ = 3230868480.

The previous prime is 8079066637. The next prime is 8079066679. The reversal of 8079066640 is 466609708.

It can be written as a sum of positive squares in 4 ways, for example, as 15745024 + 8063321616 = 3968^2 + 89796^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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, 436780 + ... + 454900.

Almost surely, 2^8079066640 is an apocalyptic number.

8079066640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8079066640 is an abundant number, since it is smaller than the sum of its proper divisors (10709170568).

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

8079066640 is a wasteful number, since it uses less digits than its factorization.

8079066640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23707 (or 23701 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 8079066640 is about 89883.6283201785. The cubic root of 8079066640 is about 2006.5672983592.

The spelling of 8079066640 in words is "eight billion, seventy-nine million, sixty-six thousand, six hundred forty".