679893871797 has 64 divisors (see below), whose sum is σ = 1171678579200. Its totient is φ = 381598179840.

The previous prime is 679893871759. The next prime is 679893871807. The reversal of 679893871797 is 797178398976.

679893871797 is a `hidden beast` number, since 6 + 79 + 89 + 387 + 1 + 7 + 97 = 666.

It is not a de Polignac number, because 679893871797 - 2⁶ = 679893871733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679893471797) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8132473 + ... + 8215649.

It is an arithmetic number, because the mean of its divisors is an integer number (18307477800).

Almost surely, 2^679893871797 is an apocalyptic number.

It is an amenable number.

679893871797 is a deficient number, since it is larger than the sum of its proper divisors (491784707403).

679893871797 is a wasteful number, since it uses less digits than its factorization.

679893871797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83963 (or 83957 counting only the distinct ones).

The product of its digits is 2016379008, while the sum is 81.

The spelling of 679893871797 in words is "six hundred seventy-nine billion, eight hundred ninety-three million, eight hundred seventy-one thousand, seven hundred ninety-seven".