623704 has 16 divisors (see below), whose sum is σ = 1192320. Its totient is φ = 305760.

The previous prime is 623699. The next prime is 623717. The reversal of 623704 is 407326.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 312 + ... + 1159.

It is an arithmetic number, because the mean of its divisors is an integer number (74520).

2⁶²³⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

623704 is a deficient number, since it is larger than the sum of its proper divisors (568616).

623704 is a wasteful number, since it uses less digits than its factorization.

623704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530 (or 1526 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 623704 is about 789.7493273185. The cubic root of 623704 is about 85.4396596703.

The spelling of 623704 in words is "six hundred twenty-three thousand, seven hundred four".