6255639 has 24 divisors (see below), whose sum is σ = 9830912. Its totient is φ = 3810240.

The previous prime is 6255631. The next prime is 6255649. The reversal of 6255639 is 9365526.

It is not a de Polignac number, because 6255639 - 2³ = 6255631 is a prime.

6255639 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6255631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14649 + ... + 15069.

Almost surely, 2^6255639 is an apocalyptic number.

6255639 is a deficient number, since it is larger than the sum of its proper divisors (3575273).

6255639 is a wasteful number, since it uses less digits than its factorization.

6255639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 564 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 6255639 is about 2501.1275457281. The cubic root of 6255639 is about 184.2569562893.

The spelling of 6255639 in words is "six million, two hundred fifty-five thousand, six hundred thirty-nine".