655626 has 16 divisors (see below), whose sum is σ = 1324224. Its totient is φ = 216384.

The previous prime is 655601. The next prime is 655637. The reversal of 655626 is 626556.

655626 is nontrivially palindromic in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 655593 and 655602.

It is an unprimeable number.

655626 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 7 ways as a sum of consecutive naturals, for example, 195 + ... + 1161.

It is an arithmetic number, because the mean of its divisors is an integer number (82764).

2⁶⁵⁵⁶²⁶ is an apocalyptic number.

655626 is an abundant number, since it is smaller than the sum of its proper divisors (668598).

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

655626 is a wasteful number, since it uses less digits than its factorization.

655626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085.

The product of its digits is 10800, while the sum is 30.

The square root of 655626 is about 809.7073545424. The cubic root of 655626 is about 86.8731140146.

The spelling of 655626 in words is "six hundred fifty-five thousand, six hundred twenty-six".