680591053 has 4 divisors (see below), whose sum is σ = 704059740. Its totient is φ = 657122368.

The previous prime is 680591047. The next prime is 680591101. The reversal of 680591053 is 350195086.

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

It can be written as a sum of positive squares in 2 ways, for example, as 261242569 + 419348484 = 16163^2 + 20478^2 .

It is not a de Polignac number, because 680591053 - 2²⁹ = 143720141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680591003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11734300 + ... + 11734357.

It is an arithmetic number, because the mean of its divisors is an integer number (176014935).

Almost surely, 2^680591053 is an apocalyptic number.

It is an amenable number.

680591053 is a deficient number, since it is larger than the sum of its proper divisors (23468687).

680591053 is a wasteful number, since it uses less digits than its factorization.

680591053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23468686.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 680591053 is about 26088.1400831872. The cubic root of 680591053 is about 879.6206409795.

The spelling of 680591053 in words is "six hundred eighty million, five hundred ninety-one thousand, fifty-three".