689544324 has 144 divisors (see below), whose sum is σ = 2091048960. Its totient is φ = 187323840.

The previous prime is 689544319. The next prime is 689544367. The reversal of 689544324 is 423445986.

689544324 is a `hidden beast` number, since 6 + 89 + 544 + 3 + 24 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 689544324.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1570497 + ... + 1570935.

Almost surely, 2^689544324 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 689544324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1045524480).

689544324 is an abundant number, since it is smaller than the sum of its proper divisors (1401504636).

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

689544324 is a wasteful number, since it uses less digits than its factorization.

689544324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 745 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 689544324 is about 26259.1759962113. The cubic root of 689544324 is about 883.4610273528.

The spelling of 689544324 in words is "six hundred eighty-nine million, five hundred forty-four thousand, three hundred twenty-four".