689472 has 140 divisors (see below), whose sum is σ = 2458720. Its totient is φ = 186624.

The previous prime is 689467. The next prime is 689509. The reversal of 689472 is 274986.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is one of the 548 Lynch-Bell numbers.

It is a nialpdrome in base 16.

It is a zygodrome in base 6.

It is a congruent number.

It is an unprimeable number.

689472 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36279 + ... + 36297.

2⁶⁸⁹⁴⁷² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1229360).

689472 is an abundant number, since it is smaller than the sum of its proper divisors (1769248).

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

689472 is a wasteful number, since it uses less digits than its factorization.

689472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50 (or 31 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 689472 is about 830.3445068163. The cubic root of 689472 is about 88.3430138515.

The spelling of 689472 in words is "six hundred eighty-nine thousand, four hundred seventy-two".