623505324 has 48 divisors (see below), whose sum is σ = 1573870592. Its totient is φ = 190976832.

The previous prime is 623505313. The next prime is 623505329. The reversal of 623505324 is 423505326.

It is a junction number, because it is equal to n+sod(n) for n = 623505291 and 623505300.

It is not an unprimeable number, because it can be changed into a prime (623505329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25827 + ... + 43749.

Almost surely, 2^623505324 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 623505324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (786935296).

623505324 is an abundant number, since it is smaller than the sum of its proper divisors (950365268).

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

623505324 is a wasteful number, since it uses less digits than its factorization.

623505324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18166 (or 18164 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 623505324 is about 24970.0885861464. The cubic root of 623505324 is about 854.3058666317.

The spelling of 623505324 in words is "six hundred twenty-three million, five hundred five thousand, three hundred twenty-four".