655628 has 12 divisors (see below), whose sum is σ = 1166592. Its totient is φ = 322320.

The previous prime is 655601. The next prime is 655637. The reversal of 655628 is 826556.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 655594 and 655603.

It is an unprimeable number.

655628 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1100 + ... + 1587.

It is an arithmetic number, because the mean of its divisors is an integer number (97216).

2⁶⁵⁵⁶²⁸ is an apocalyptic number.

It is an amenable number.

655628 is a deficient number, since it is larger than the sum of its proper divisors (510964).

655628 is a wasteful number, since it uses less digits than its factorization.

655628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752 (or 2750 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 655628 is about 809.7085895555. The cubic root of 655628 is about 86.8732023505.

The spelling of 655628 in words is "six hundred fifty-five thousand, six hundred twenty-eight".