623804 has 12 divisors (see below), whose sum is σ = 1097544. Its totient is φ = 310224.

The previous prime is 623803. The next prime is 623839. The reversal of 623804 is 408326.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 623804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827 + ... + 1389.

It is an arithmetic number, because the mean of its divisors is an integer number (91462).

2⁶²³⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

623804 is a deficient number, since it is larger than the sum of its proper divisors (473740).

623804 is a wasteful number, since it uses less digits than its factorization.

623804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 623804 is about 789.8126360093. The cubic root of 623804 is about 85.4442256767. Note that the first 3 decimals are identical.

The spelling of 623804 in words is "six hundred twenty-three thousand, eight hundred four".