689760560 has 20 divisors (see below), whose sum is σ = 1603693488. Its totient is φ = 275904192.

The previous prime is 689760559. The next prime is 689760581. The reversal of 689760560 is 65067986.

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

It is an unprimeable number.

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, 4310924 + ... + 4311083.

Almost surely, 2^689760560 is an apocalyptic number.

It is an amenable number.

689760560 is an abundant number, since it is smaller than the sum of its proper divisors (913932928).

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

689760560 is a wasteful number, since it uses less digits than its factorization.

689760560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8622020 (or 8622014 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 689760560 is about 26263.2930151571. The cubic root of 689760560 is about 883.5533666492.

The spelling of 689760560 in words is "six hundred eighty-nine million, seven hundred sixty thousand, five hundred sixty".