623508 has 24 divisors (see below), whose sum is σ = 1467648. Its totient is φ = 206016.

The previous prime is 623477. The next prime is 623521. The reversal of 623508 is 805326.

It is a congruent number.

It is an unprimeable number.

623508 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 7 ways as a sum of consecutive naturals, for example, 2560 + ... + 2792.

It is an arithmetic number, because the mean of its divisors is an integer number (61152).

2⁶²³⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

623508 is an abundant number, since it is smaller than the sum of its proper divisors (844140).

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

623508 is a wasteful number, since it uses less digits than its factorization.

623508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 623508 is about 789.6252275605. The cubic root of 623508 is about 85.4307088818.

It can be divided in two parts, 62 and 3508, that added together give a triangular number (3570 = T₈₄).

The spelling of 623508 in words is "six hundred twenty-three thousand, five hundred eight".