680943318 has 32 divisors (see below), whose sum is σ = 1563891840. Its totient is φ = 195485760.

The previous prime is 680943317. The next prime is 680943377. The reversal of 680943318 is 813349086.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 680943318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680943317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270255 + ... + 272762.

It is an arithmetic number, because the mean of its divisors is an integer number (48871620).

Almost surely, 2^680943318 is an apocalyptic number.

680943318 is an abundant number, since it is smaller than the sum of its proper divisors (882948522).

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

680943318 is a wasteful number, since it uses less digits than its factorization.

680943318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543052.

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

The square root of 680943318 is about 26094.8906493206. The cubic root of 680943318 is about 879.7723748385.

The spelling of 680943318 in words is "six hundred eighty million, nine hundred forty-three thousand, three hundred eighteen".