679766668 has 48 divisors (see below), whose sum is σ = 1376040960. Its totient is φ = 287816256.

The previous prime is 679766621. The next prime is 679766669. The reversal of 679766668 is 866667976.

It is not an unprimeable number, because it can be changed into a prime (679766669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1050321 + ... + 1050967.

It is an arithmetic number, because the mean of its divisors is an integer number (28667520).

Almost surely, 2^679766668 is an apocalyptic number.

It is an amenable number.

679766668 is an abundant number, since it is smaller than the sum of its proper divisors (696274292).

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

679766668 is a wasteful number, since it uses less digits than its factorization.

679766668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054 (or 1052 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 61.

The square root of 679766668 is about 26072.3353000839. The cubic root of 679766668 is about 879.2653424290.

The spelling of 679766668 in words is "six hundred seventy-nine million, seven hundred sixty-six thousand, six hundred sixty-eight".