680620398 has 16 divisors (see below), whose sum is σ = 1441314000. Its totient is φ = 213527936.

The previous prime is 680620387. The next prime is 680620417. The reversal of 680620398 is 893026086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3336273 + ... + 3336476.

It is an arithmetic number, because the mean of its divisors is an integer number (90082125).

Almost surely, 2^680620398 is an apocalyptic number.

680620398 is an abundant number, since it is smaller than the sum of its proper divisors (760693602).

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

680620398 is a wasteful number, since it uses less digits than its factorization.

680620398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6672771.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 680620398 is about 26088.7024974413. The cubic root of 680620398 is about 879.6332829797.

The spelling of 680620398 in words is "six hundred eighty million, six hundred twenty thousand, three hundred ninety-eight".