668006776962 has 24 divisors (see below), whose sum is σ = 1654112019456. Its totient is φ = 190859079096.

The previous prime is 668006776951. The next prime is 668006777057. The reversal of 668006776962 is 269677600866.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 668006776962.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2650820418 + ... + 2650820669.

It is an arithmetic number, because the mean of its divisors is an integer number (68921334144).

Almost surely, 2^668006776962 is an apocalyptic number.

668006776962 is an abundant number, since it is smaller than the sum of its proper divisors (986105242494).

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

668006776962 is a wasteful number, since it uses less digits than its factorization.

668006776962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301641102 (or 5301641099 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 63.

The spelling of 668006776962 in words is "six hundred sixty-eight billion, six million, seven hundred seventy-six thousand, nine hundred sixty-two".