689432 has 8 divisors (see below), whose sum is σ = 1292700. Its totient is φ = 344712.

The previous prime is 689431. The next prime is 689441. The reversal of 689432 is 234986.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43082 + ... + 43097.

2⁶⁸⁹⁴³² is an apocalyptic number.

It is an amenable number.

689432 is a deficient number, since it is larger than the sum of its proper divisors (603268).

689432 is a wasteful number, since it uses less digits than its factorization.

689432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86185 (or 86181 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 689432 is about 830.3204200789. The cubic root of 689432 is about 88.3413053997.

The spelling of 689432 in words is "six hundred eighty-nine thousand, four hundred thirty-two".