680247066 has 16 divisors (see below), whose sum is σ = 1364050944. Its totient is φ = 226156224.

The previous prime is 680247017. The next prime is 680247067. The reversal of 680247066 is 660742086.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (680247067) 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, 145711 + ... + 150306.

It is an arithmetic number, because the mean of its divisors is an integer number (85253184).

Almost surely, 2^680247066 is an apocalyptic number.

680247066 is an abundant number, since it is smaller than the sum of its proper divisors (683803878).

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

680247066 is a wasteful number, since it uses less digits than its factorization.

680247066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296405.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 680247066 is about 26081.5464648859. The cubic root of 680247066 is about 879.4724222339.

The spelling of 680247066 in words is "six hundred eighty million, two hundred forty-seven thousand, sixty-six".