623504 has 40 divisors (see below), whose sum is σ = 1458240. Its totient is φ = 252288.

The previous prime is 623477. The next prime is 623521. The reversal of 623504 is 405326.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1982 + ... + 2274.

It is an arithmetic number, because the mean of its divisors is an integer number (36456).

2⁶²³⁵⁰⁴ 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 623504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (729120).

623504 is an abundant number, since it is smaller than the sum of its proper divisors (834736).

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

623504 is a wasteful number, since it uses less digits than its factorization.

623504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 623504 is about 789.6226947093. The cubic root of 623504 is about 85.4305261931.

The spelling of 623504 in words is "six hundred twenty-three thousand, five hundred four".