679797973 has 16 divisors (see below), whose sum is σ = 702054576. Its totient is φ = 658022400.

The previous prime is 679797953. The next prime is 679797983. The reversal of 679797973 is 379797976.

It can be written as a sum of positive squares in 8 ways, for example, as 52896529 + 626901444 = 7273^2 + 25038^2 .

It is a cyclic number.

It is not a de Polignac number, because 679797973 - 2²⁵ = 646243541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679797953) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1009765 + ... + 1010437.

It is an arithmetic number, because the mean of its divisors is an integer number (43878411).

Almost surely, 2^679797973 is an apocalyptic number.

It is an amenable number.

679797973 is a deficient number, since it is larger than the sum of its proper divisors (22256603).

679797973 is a wasteful number, since it uses less digits than its factorization.

679797973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its digits is 31505922, while the sum is 64.

The square root of 679797973 is about 26072.9356421558. The cubic root of 679797973 is about 879.2788396972.

The spelling of 679797973 in words is "six hundred seventy-nine million, seven hundred ninety-seven thousand, nine hundred seventy-three".