680006202666 has 64 divisors (see below), whose sum is σ = 1630272172032. Its totient is φ = 185014400832.

The previous prime is 680006202647. The next prime is 680006202727. The reversal of 680006202666 is 666202600086.

680006202666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4582116 + ... + 4728191.

It is an arithmetic number, because the mean of its divisors is an integer number (25473002688).

Almost surely, 2^680006202666 is an apocalyptic number.

680006202666 is an abundant number, since it is smaller than the sum of its proper divisors (950265969366).

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

680006202666 is a wasteful number, since it uses less digits than its factorization.

680006202666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9310403.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 680006202666 in words is "six hundred eighty billion, six million, two hundred two thousand, six hundred sixty-six".