679594294881 has 24 divisors (see below), whose sum is σ = 1040633479080. Its totient is φ = 425897657856.

The previous prime is 679594294853. The next prime is 679594294903. The reversal of 679594294881 is 188492495976.

679594294881 is a `hidden beast` number, since 6 + 7 + 9 + 594 + 29 + 4 + 8 + 8 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 353335136400 + 326259158481 = 594420^2 + 571191^2 .

It is not a de Polignac number, because 679594294881 - 2⁹ = 679594294369 is a prime.

It is a super-2 number, since 2×679594294881² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679594294681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2552170 + ... + 2805843.

It is an arithmetic number, because the mean of its divisors is an integer number (43359728295).

Almost surely, 2^679594294881 is an apocalyptic number.

It is an amenable number.

679594294881 is a deficient number, since it is larger than the sum of its proper divisors (361039184199).

679594294881 is a wasteful number, since it uses less digits than its factorization.

679594294881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5358865 (or 5358862 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 72.

The spelling of 679594294881 in words is "six hundred seventy-nine billion, five hundred ninety-four million, two hundred ninety-four thousand, eight hundred eighty-one".