689747232 has 24 divisors (see below), whose sum is σ = 1810586736. Its totient is φ = 229915712.

The previous prime is 689747213. The next prime is 689747237. The reversal of 689747232 is 232747986.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (689747237) 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, 3592338 + ... + 3592529.

It is an arithmetic number, because the mean of its divisors is an integer number (75441114).

Almost surely, 2^689747232 is an apocalyptic number.

It is an amenable number.

689747232 is an abundant number, since it is smaller than the sum of its proper divisors (1120839504).

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

689747232 is a wasteful number, since it uses less digits than its factorization.

689747232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7184880 (or 7184872 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The square root of 689747232 is about 26263.0392757579. The cubic root of 689747232 is about 883.5476757492.

The spelling of 689747232 in words is "six hundred eighty-nine million, seven hundred forty-seven thousand, two hundred thirty-two".