680407782 has 16 divisors (see below), whose sum is σ = 1361176320. Its totient is φ = 226742472.

The previous prime is 680407733. The next prime is 680407787. The reversal of 680407782 is 287704086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680407787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13719 + ... + 39357.

It is an arithmetic number, because the mean of its divisors is an integer number (85073520).

Almost surely, 2^680407782 is an apocalyptic number.

680407782 is an abundant number, since it is smaller than the sum of its proper divisors (680768538).

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

680407782 is a wasteful number, since it uses less digits than its factorization.

680407782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30067.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 680407782 is about 26084.6273118862. The cubic root of 680407782 is about 879.5416785217.

The spelling of 680407782 in words is "six hundred eighty million, four hundred seven thousand, seven hundred eighty-two".