680437378 has 8 divisors (see below), whose sum is σ = 1021029372. Its totient is φ = 340094256.

The previous prime is 680437361. The next prime is 680437379. The reversal of 680437378 is 873734086.

It can be written as a sum of positive squares in 2 ways, for example, as 642774609 + 37662769 = 25353^2 + 6137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (680437379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55225 + ... + 66412.

Almost surely, 2^680437378 is an apocalyptic number.

680437378 is a deficient number, since it is larger than the sum of its proper divisors (340591994).

680437378 is a wasteful number, since it uses less digits than its factorization.

680437378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124436.

The product of its (nonzero) digits is 677376, while the sum is 46.

The square root of 680437378 is about 26085.1946130367. The cubic root of 680437378 is about 879.5544309420.

The spelling of 680437378 in words is "six hundred eighty million, four hundred thirty-seven thousand, three hundred seventy-eight".