6979581364 has 36 divisors (see below), whose sum is σ = 14213744580. Its totient is φ = 2990131200.

The previous prime is 6979581317. The next prime is 6979581383. The reversal of 6979581364 is 4631859796.

It can be written as a sum of positive squares in 2 ways, for example, as 3649368100 + 3330213264 = 60410^2 + 57708^2 .

It is a super-2 number, since 2×6979581364² = 97429112033392200992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6979581299 and 6979581308.

It is a congruent number.

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, 722164 + ... + 731764.

Almost surely, 2^6979581364 is an apocalyptic number.

It is an amenable number.

6979581364 is an abundant number, since it is smaller than the sum of its proper divisors (7234163216).

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

6979581364 is a wasteful number, since it uses less digits than its factorization.

6979581364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13328 (or 13319 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 58.

The square root of 6979581364 is about 83543.8888489158. Note that the first 4 decimals coincide. The cubic root of 6979581364 is about 1911.0693977580.

The spelling of 6979581364 in words is "six billion, nine hundred seventy-nine million, five hundred eighty-one thousand, three hundred sixty-four".