680437786 has 16 divisors (see below), whose sum is σ = 1204093440. Its totient is φ = 282209040.

The previous prime is 680437757. The next prime is 680437787. The reversal of 680437786 is 687734086.

It is not an unprimeable number, because it can be changed into a prime (680437787) 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, 783481 + ... + 784348.

It is an arithmetic number, because the mean of its divisors is an integer number (75255840).

Almost surely, 2^680437786 is an apocalyptic number.

680437786 is a deficient number, since it is larger than the sum of its proper divisors (523655654).

680437786 is a wasteful number, since it uses less digits than its factorization.

680437786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567869.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 680437786 is about 26085.2024335637. The cubic root of 680437786 is about 879.5546067398.

The spelling of 680437786 in words is "six hundred eighty million, four hundred thirty-seven thousand, seven hundred eighty-six".