680672273 has 4 divisors (see below), whose sum is σ = 680724660. Its totient is φ = 680619888.

The previous prime is 680672249. The next prime is 680672309. The reversal of 680672273 is 372276086.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 564205009 + 116467264 = 23753^2 + 10792^2 .

It is a cyclic number.

It is not a de Polignac number, because 680672273 - 2²⁸ = 412236817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 680672273.

It is not an unprimeable number, because it can be changed into a prime (680672173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9611 + ... + 38127.

It is an arithmetic number, because the mean of its divisors is an integer number (170181165).

Almost surely, 2^680672273 is an apocalyptic number.

It is an amenable number.

680672273 is a deficient number, since it is larger than the sum of its proper divisors (52387).

680672273 is a wasteful number, since it uses less digits than its factorization.

680672273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52386.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 680672273 is about 26089.6966827903. The cubic root of 680672273 is about 879.6556301488.

The spelling of 680672273 in words is "six hundred eighty million, six hundred seventy-two thousand, two hundred seventy-three".