680425884864 has 168 divisors, whose sum is σ = 2135534291280. Its totient is φ = 205422643200.

The previous prime is 680425884851. The next prime is 680425884893. The reversal of 680425884864 is 468488524086.

680425884864 is a `hidden beast` number, since 6 + 8 + 0 + 4 + 2 + 588 + 48 + 6 + 4 = 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1504774 + ... + 1903994.

Almost surely, 2^680425884864 is an apocalyptic number.

680425884864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680425884864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1067767145640).

680425884864 is an abundant number, since it is smaller than the sum of its proper divisors (1455108406416).

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

680425884864 is a wasteful number, since it uses less digits than its factorization.

680425884864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399519 (or 399506 counting only the distinct ones).

The product of its (nonzero) digits is 94371840, while the sum is 63.

The spelling of 680425884864 in words is "six hundred eighty billion, four hundred twenty-five million, eight hundred eighty-four thousand, eight hundred sixty-four".