623256 has 16 divisors (see below), whose sum is σ = 1558200. Its totient is φ = 207744.

The previous prime is 623221. The next prime is 623261. The reversal of 623256 is 652326.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 25969 = 623256 / (6 + 2 + 3 + 2 + 5 + 6).

It is a d-powerful number, because it can be written as 6 + 2¹⁶ + 2¹⁸ + 3² + 5⁶ + 6⁷ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 623256.

It is an unprimeable number.

623256 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 12961 + ... + 13008.

2⁶²³²⁵⁶ is an apocalyptic number.

It is an amenable number.

623256 is an abundant number, since it is smaller than the sum of its proper divisors (934944).

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

623256 is a wasteful number, since it uses less digits than its factorization.

623256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25978 (or 25974 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 623256 is about 789.4656420643. The cubic root of 623256 is about 85.4191979685.

The spelling of 623256 in words is "six hundred twenty-three thousand, two hundred fifty-six".