6624256 has 22 divisors (see below), whose sum is σ = 13244090. Its totient is φ = 3311616.

The previous prime is 6624199. The next prime is 6624259. The reversal of 6624256 is 6524266.

It can be written as a sum of positive squares in only one way, i.e., 4064256 + 2560000 = 2016^2 + 1600^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6624259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211 + ... + 4258.

Almost surely, 2^6624256 is an apocalyptic number.

It is an amenable number.

6624256 is a deficient number, since it is larger than the sum of its proper divisors (6619834).

6624256 is an equidigital number, since it uses as much as digits as its factorization.

6624256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6489 (or 6471 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 6624256 is about 2573.7630038525. The cubic root of 6624256 is about 187.8072568149.

The spelling of 6624256 in words is "six million, six hundred twenty-four thousand, two hundred fifty-six".