689917404 has 24 divisors (see below), whose sum is σ = 1756153728. Its totient is φ = 209065840.

The previous prime is 689917391. The next prime is 689917411. The reversal of 689917404 is 404719986.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2613192 + ... + 2613455.

It is an arithmetic number, because the mean of its divisors is an integer number (73173072).

Almost surely, 2^689917404 is an apocalyptic number.

It is an amenable number.

689917404 is an abundant number, since it is smaller than the sum of its proper divisors (1066236324).

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

689917404 is a wasteful number, since it uses less digits than its factorization.

689917404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5226665 (or 5226663 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 689917404 is about 26266.2788380844. The cubic root of 689917404 is about 883.6203316946.

The spelling of 689917404 in words is "six hundred eighty-nine million, nine hundred seventeen thousand, four hundred four".