680894158920 has 64 divisors (see below), whose sum is σ = 2150192088000. Its totient is φ = 172015365888.

The previous prime is 680894158913. The next prime is 680894158949. The reversal of 680894158920 is 29851498086.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149316615 + ... + 149321174.

It is an arithmetic number, because the mean of its divisors is an integer number (33596751375).

Almost surely, 2^680894158920 is an apocalyptic number.

680894158920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680894158920 is an abundant number, since it is smaller than the sum of its proper divisors (1469297929080).

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

680894158920 is a wasteful number, since it uses less digits than its factorization.

680894158920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298637822 (or 298637818 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 60.

The spelling of 680894158920 in words is "six hundred eighty billion, eight hundred ninety-four million, one hundred fifty-eight thousand, nine hundred twenty".