255634644 has 24 divisors (see below), whose sum is σ = 631568448. Its totient is φ = 80199040.

The previous prime is 255634619. The next prime is 255634679. The reversal of 255634644 is 446436552.

255634644 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

255634644 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626352 + ... + 626759.

It is an arithmetic number, because the mean of its divisors is an integer number (26315352).

Almost surely, 2^255634644 is an apocalyptic number.

It is an amenable number.

255634644 is an abundant number, since it is smaller than the sum of its proper divisors (375933804).

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

255634644 is a wasteful number, since it uses less digits than its factorization.

255634644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253135 (or 1253133 counting only the distinct ones).

The product of its digits is 345600, while the sum is 39.

The square root of 255634644 is about 15988.5785484514. The cubic root of 255634644 is about 634.6582110885.

The spelling of 255634644 in words is "two hundred fifty-five million, six hundred thirty-four thousand, six hundred forty-four".