680924396565 has 384 divisors, whose sum is σ = 1531299594240. Its totient is φ = 281124328320.

The previous prime is 680924396563. The next prime is 680924396611. The reversal of 680924396565 is 565693429086.

680924396565 is a `hidden beast` number, since 6 + 80 + 9 + 2 + 439 + 65 + 65 = 666.

It is not a de Polignac number, because 680924396565 - 2¹ = 680924396563 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680924396563) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 10163050662 + ... + 10163050728.

It is an arithmetic number, because the mean of its divisors is an integer number (3987759360).

Almost surely, 2^680924396565 is an apocalyptic number.

It is an amenable number.

680924396565 is an abundant number, since it is smaller than the sum of its proper divisors (850375197675).

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

680924396565 is an equidigital number, since it uses as much as digits as its factorization.

680924396565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 83980800, while the sum is 63.

The spelling of 680924396565 in words is "six hundred eighty billion, nine hundred twenty-four million, three hundred ninety-six thousand, five hundred sixty-five".