680564259774 has 36 divisors (see below), whose sum is σ = 1715299718184. Its totient is φ = 194446931112.

The previous prime is 680564259763. The next prime is 680564259779. The reversal of 680564259774 is 477952465086.

680564259774 is a `hidden beast` number, since 6 + 8 + 0 + 56 + 425 + 97 + 74 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680564259779) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 385806522 + ... + 385808285.

It is an arithmetic number, because the mean of its divisors is an integer number (47647214394).

Almost surely, 2^680564259774 is an apocalyptic number.

680564259774 is an abundant number, since it is smaller than the sum of its proper divisors (1034735458410).

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

680564259774 is a wasteful number, since it uses less digits than its factorization.

680564259774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771614829 (or 771614819 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 63.

The spelling of 680564259774 in words is "six hundred eighty billion, five hundred sixty-four million, two hundred fifty-nine thousand, seven hundred seventy-four".