655888 has 10 divisors (see below), whose sum is σ = 1270814. Its totient is φ = 327936.

The previous prime is 655883. The next prime is 655901. The reversal of 655888 is 888556.

It can be written as a sum of positive squares in only one way, i.e., 451584 + 204304 = 672^2 + 452^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 655888.

It is not an unprimeable number, because it can be changed into a prime (655883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20481 + ... + 20512.

2⁶⁵⁵⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

655888 is a deficient number, since it is larger than the sum of its proper divisors (614926).

655888 is a wasteful number, since it uses less digits than its factorization.

655888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41001 (or 40995 counting only the distinct ones).

The product of its digits is 76800, while the sum is 40.

The square root of 655888 is about 809.8691252295. The cubic root of 655888 is about 86.8846844956.

The spelling of 655888 in words is "six hundred fifty-five thousand, eight hundred eighty-eight".