680013206 has 4 divisors (see below), whose sum is σ = 1020019812. Its totient is φ = 340006602.

The previous prime is 680013181. The next prime is 680013233. The reversal of 680013206 is 602310086.

It is a semiprime because it is the product of two primes.

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, 170003300 + ... + 170003303.

It is an arithmetic number, because the mean of its divisors is an integer number (255004953).

Almost surely, 2^680013206 is an apocalyptic number.

680013206 is a deficient number, since it is larger than the sum of its proper divisors (340006606).

680013206 is a wasteful number, since it uses less digits than its factorization.

680013206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340006605.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 680013206 is about 26077.0628330723. The cubic root of 680013206 is about 879.3716269960.

The spelling of 680013206 in words is "six hundred eighty million, thirteen thousand, two hundred six".