655630 has 8 divisors (see below), whose sum is σ = 1180152. Its totient is φ = 262248.

The previous prime is 655601. The next prime is 655637. The reversal of 655630 is 36556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 655595 and 655604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655637) by changing a digit.

655630 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32772 + ... + 32791.

It is an arithmetic number, because the mean of its divisors is an integer number (147519).

2⁶⁵⁵⁶³⁰ is an apocalyptic number.

655630 is a deficient number, since it is larger than the sum of its proper divisors (524522).

655630 is a wasteful number, since it uses less digits than its factorization.

655630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65570.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 655630 is about 809.7098245668. The cubic root of 655630 is about 86.8732906863.

The spelling of 655630 in words is "six hundred fifty-five thousand, six hundred thirty".