2666626808 has 16 divisors (see below), whose sum is σ = 5217313680. Its totient is φ = 1275343168.

The previous prime is 2666626799. The next prime is 2666626819. The reversal of 2666626808 is 8086266662.

It is a super-2 number, since 2×2666626808² = 14221797066288537728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7246085 + ... + 7246452.

It is an arithmetic number, because the mean of its divisors is an integer number (326082105).

Almost surely, 2^2666626808 is an apocalyptic number.

It is an amenable number.

2666626808 is a deficient number, since it is larger than the sum of its proper divisors (2550686872).

2666626808 is a wasteful number, since it uses less digits than its factorization.

2666626808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14492566 (or 14492562 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The square root of 2666626808 is about 51639.3920181096. The cubic root of 2666626808 is about 1386.7156395529.

The spelling of 2666626808 in words is "two billion, six hundred sixty-six million, six hundred twenty-six thousand, eight hundred eight".