680368815 has 160 divisors (see below), whose sum is σ = 1555614720. Its totient is φ = 276950016.

The previous prime is 680368813. The next prime is 680368823. The reversal of 680368815 is 518863086.

It is not a de Polignac number, because 680368815 - 2¹ = 680368813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680368813) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 915334 + ... + 916076.

It is an arithmetic number, because the mean of its divisors is an integer number (9722592).

Almost surely, 2^680368815 is an apocalyptic number.

680368815 is an abundant number, since it is smaller than the sum of its proper divisors (875245905).

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

680368815 is a wasteful number, since it uses less digits than its factorization.

680368815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 680368815 is about 26083.8803670006. The cubic root of 680368815 is about 879.5248877306.

The spelling of 680368815 in words is "six hundred eighty million, three hundred sixty-eight thousand, eight hundred fifteen".