680729806 has 32 divisors (see below), whose sum is σ = 1084720896. Its totient is φ = 319872000.

The previous prime is 680729783. The next prime is 680729809. The reversal of 680729806 is 608927086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680729809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 713826 + ... + 714778.

It is an arithmetic number, because the mean of its divisors is an integer number (33897528).

Almost surely, 2^680729806 is an apocalyptic number.

680729806 is a deficient number, since it is larger than the sum of its proper divisors (403991090).

680729806 is a wasteful number, since it uses less digits than its factorization.

680729806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 680729806 is about 26090.7992595091. The cubic root of 680729806 is about 879.6804133930.

The spelling of 680729806 in words is "six hundred eighty million, seven hundred twenty-nine thousand, eight hundred six".