623532 has 48 divisors (see below), whose sum is σ = 1793792. Its totient is φ = 164160.

The previous prime is 623531. The next prime is 623537. The reversal of 623532 is 235326.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 623499 and 623508.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 623532.

It is not an unprimeable number, because it can be changed into a prime (623531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807 + ... + 1377.

2⁶²³⁵³² 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 623532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (896896).

623532 is an abundant number, since it is smaller than the sum of its proper divisors (1170260).

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

623532 is a wasteful number, since it uses less digits than its factorization.

623532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 596 counting only the distinct ones).

The product of its digits is 1080, while the sum is 21.

The square root of 623532 is about 789.6404244971. The cubic root of 623532 is about 85.4318049975.

623532 divided by its sum of digits (21) gives a palindrome (29692).

Adding to 623532 its reverse (235326), we get a palindrome (858858).

The spelling of 623532 in words is "six hundred twenty-three thousand, five hundred thirty-two".