12256623 has 8 divisors (see below), whose sum is σ = 18158000. Its totient is φ = 8171064.

The previous prime is 12256579. The next prime is 12256633. The reversal of 12256623 is 32665221.

12256623 is a `hidden beast` number, since 12 + 25 + 6 + 623 = 666.

It is not a de Polignac number, because 12256623 - 2⁸ = 12256367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 453949 = 12256623 / (1 + 2 + 2 + 5 + 6 + 6 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226948 + ... + 227001.

It is an arithmetic number, because the mean of its divisors is an integer number (2269750).

Almost surely, 2^12256623 is an apocalyptic number.

12256623 is a deficient number, since it is larger than the sum of its proper divisors (5901377).

12256623 is an equidigital number, since it uses as much as digits as its factorization.

12256623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453958 (or 453952 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 12256623 is about 3500.9460150079. The cubic root of 12256623 is about 230.5633512264.

The spelling of 12256623 in words is "twelve million, two hundred fifty-six thousand, six hundred twenty-three".