689223732 has 12 divisors (see below), whose sum is σ = 1608188736. Its totient is φ = 229741240.

The previous prime is 689223709. The next prime is 689223749. The reversal of 689223732 is 237322986.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28717644 + ... + 28717667.

It is an arithmetic number, because the mean of its divisors is an integer number (134015728).

Almost surely, 2^689223732 is an apocalyptic number.

It is an amenable number.

689223732 is an abundant number, since it is smaller than the sum of its proper divisors (918965004).

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

689223732 is a wasteful number, since it uses less digits than its factorization.

689223732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57435318 (or 57435316 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 689223732 is about 26253.0709060864. The cubic root of 689223732 is about 883.3240893617.

The spelling of 689223732 in words is "six hundred eighty-nine million, two hundred twenty-three thousand, seven hundred thirty-two".