680896836 has 27 divisors (see below), whose sum is σ = 1721551741. Its totient is φ = 226913424.

The previous prime is 680896831. The next prime is 680896837. The reversal of 680896836 is 638698086.

The square root of 680896836 is 26094.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15256836 + 665640000 = 3906^2 + 25800^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680896831) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 154390 + ... + 158738.

Almost surely, 2^680896836 is an apocalyptic number.

680896836 is the 26094-th square number.

It is an amenable number.

680896836 is an abundant number, since it is smaller than the sum of its proper divisors (1040654905).

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

680896836 is an equidigital number, since it uses as much as digits as its factorization.

680896836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8708 (or 4354 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The cubic root of 680896836 is about 879.7523562805.

The spelling of 680896836 in words is "six hundred eighty million, eight hundred ninety-six thousand, eight hundred thirty-six".