680511798 has 12 divisors (see below), whose sum is σ = 1474442268. Its totient is φ = 226837260.

The previous prime is 680511781. The next prime is 680511803. The reversal of 680511798 is 897115086.

680511798 is a `hidden beast` number, since 68 + 0 + 511 + 79 + 8 = 666.

680511798 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18903088 + ... + 18903123.

It is an arithmetic number, because the mean of its divisors is an integer number (122870189).

Almost surely, 2^680511798 is an apocalyptic number.

680511798 is an abundant number, since it is smaller than the sum of its proper divisors (793930470).

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

680511798 is a wasteful number, since it uses less digits than its factorization.

680511798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37806219 (or 37806216 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 680511798 is about 26086.6210537126. The cubic root of 680511798 is about 879.5864956388.

The spelling of 680511798 in words is "six hundred eighty million, five hundred eleven thousand, seven hundred ninety-eight".