680576409 has 48 divisors (see below), whose sum is σ = 1069411200. Its totient is φ = 415611648.

The previous prime is 680576401. The next prime is 680576459. The reversal of 680576409 is 904675086.

It is not a de Polignac number, because 680576409 - 2³ = 680576401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680576401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1663797 + ... + 1664205.

It is an arithmetic number, because the mean of its divisors is an integer number (22279400).

Almost surely, 2^680576409 is an apocalyptic number.

It is an amenable number.

680576409 is a deficient number, since it is larger than the sum of its proper divisors (388834791).

680576409 is a wasteful number, since it uses less digits than its factorization.

680576409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 680576409 is about 26087.8594177445. The cubic root of 680576409 is about 879.6143321214.

The spelling of 680576409 in words is "six hundred eighty million, five hundred seventy-six thousand, four hundred nine".