623005 has 4 divisors (see below), whose sum is σ = 747612. Its totient is φ = 498400.

The previous prime is 623003. The next prime is 623009. The reversal of 623005 is 500326.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 241081 + 381924 = 491^2 + 618^2 .

It is not a de Polignac number, because 623005 - 2¹ = 623003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 623005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623003) 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, 62296 + ... + 62305.

It is an arithmetic number, because the mean of its divisors is an integer number (186903).

2⁶²³⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

623005 is a deficient number, since it is larger than the sum of its proper divisors (124607).

623005 is a wasteful number, since it uses less digits than its factorization.

623005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124606.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 623005 is about 789.3066577700. The cubic root of 623005 is about 85.4077296486.

The spelling of 623005 in words is "six hundred twenty-three thousand, five".