679876709931 has 12 divisors (see below), whose sum is σ = 1039811438952. Its totient is φ = 426589308096.

The previous prime is 679876709929. The next prime is 679876709969. The reversal of 679876709931 is 139907678976.

It is a happy number.

It is not a de Polignac number, because 679876709931 - 2¹ = 679876709929 is a prime.

It is a super-2 number, since 2×679876709931² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 679876709931.

It is not an unprimeable number, because it can be changed into a prime (679876709231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2221819161 + ... + 2221819466.

It is an arithmetic number, because the mean of its divisors is an integer number (86650953246).

Almost surely, 2^679876709931 is an apocalyptic number.

679876709931 is a deficient number, since it is larger than the sum of its proper divisors (359934729021).

679876709931 is a wasteful number, since it uses less digits than its factorization.

679876709931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4443638650 (or 4443638647 counting only the distinct ones).

The product of its (nonzero) digits is 216040608, while the sum is 72.

The spelling of 679876709931 in words is "six hundred seventy-nine billion, eight hundred seventy-six million, seven hundred nine thousand, nine hundred thirty-one".