689509360 has 20 divisors (see below), whose sum is σ = 1603109448. Its totient is φ = 275803712.

The previous prime is 689509357. The next prime is 689509367. The reversal of 689509360 is 63905986.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 689509360.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689509367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4309354 + ... + 4309513.

Almost surely, 2^689509360 is an apocalyptic number.

It is an amenable number.

689509360 is an abundant number, since it is smaller than the sum of its proper divisors (913600088).

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

689509360 is a wasteful number, since it uses less digits than its factorization.

689509360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8618880 (or 8618874 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 689509360 is about 26258.5102395395. The cubic root of 689509360 is about 883.4460948569.

The spelling of 689509360 in words is "six hundred eighty-nine million, five hundred nine thousand, three hundred sixty".