680398036 has 6 divisors (see below), whose sum is σ = 1190696570. Its totient is φ = 340199016.

The previous prime is 680398027. The next prime is 680398049. The reversal of 680398036 is 630893086.

It can be written as a sum of positive squares in only one way, i.e., 517835536 + 162562500 = 22756^2 + 12750^2 .

It is a junction number, because it is equal to n+sod(n) for n = 680397983 and 680398001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85049751 + ... + 85049758.

Almost surely, 2^680398036 is an apocalyptic number.

It is an amenable number.

680398036 is a deficient number, since it is larger than the sum of its proper divisors (510298534).

680398036 is a wasteful number, since it uses less digits than its factorization.

680398036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170099513 (or 170099511 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 680398036 is about 26084.4404962039. The cubic root of 680398036 is about 879.5374790527.

The spelling of 680398036 in words is "six hundred eighty million, three hundred ninety-eight thousand, thirty-six".