689581304 has 16 divisors (see below), whose sum is σ = 1317361320. Its totient is φ = 338284960.

The previous prime is 689581303. The next prime is 689581309. The reversal of 689581304 is 403185986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689581303) 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, 812762 + ... + 813609.

Almost surely, 2^689581304 is an apocalyptic number.

It is an amenable number.

689581304 is a deficient number, since it is larger than the sum of its proper divisors (627780016).

689581304 is a wasteful number, since it uses less digits than its factorization.

689581304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626430 (or 1626426 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 689581304 is about 26259.8801215847. The cubic root of 689581304 is about 883.4768202969.

The spelling of 689581304 in words is "six hundred eighty-nine million, five hundred eighty-one thousand, three hundred four".