655639256 has 32 divisors (see below), whose sum is σ = 1261772640. Its totient is φ = 319258368.

The previous prime is 655639253. The next prime is 655639267. The reversal of 655639256 is 652936556.

It is a self number, because there is not a number n which added to its sum of digits gives 655639256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655639253) 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, 52445 + ... + 63731.

It is an arithmetic number, because the mean of its divisors is an integer number (39430395).

Almost surely, 2^655639256 is an apocalyptic number.

It is an amenable number.

655639256 is a deficient number, since it is larger than the sum of its proper divisors (606133384).

655639256 is a wasteful number, since it uses less digits than its factorization.

655639256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11483 (or 11479 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 47.

The square root of 655639256 is about 25605.4536378483. The cubic root of 655639256 is about 868.7369950195.

The spelling of 655639256 in words is "six hundred fifty-five million, six hundred thirty-nine thousand, two hundred fifty-six".