680047818 has 24 divisors (see below), whose sum is σ = 1374610848. Its totient is φ = 224267808.

The previous prime is 680047813. The next prime is 680047873. The reversal of 680047818 is 818740086.

It is a super-2 number, since 2×680047818² = 924930069533122248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 680047818.

It is not an unprimeable number, because it can be changed into a prime (680047813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 647758 + ... + 648806.

It is an arithmetic number, because the mean of its divisors is an integer number (57275452).

Almost surely, 2^680047818 is an apocalyptic number.

680047818 is an abundant number, since it is smaller than the sum of its proper divisors (694563030).

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

680047818 is a wasteful number, since it uses less digits than its factorization.

680047818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 680047818 is about 26077.7264729884. The cubic root of 680047818 is about 879.3865464584.

The spelling of 680047818 in words is "six hundred eighty million, forty-seven thousand, eight hundred eighteen".