656233 has 4 divisors (see below), whose sum is σ = 657988. Its totient is φ = 654480.

The previous prime is 656221. The next prime is 656237. The reversal of 656233 is 332656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120409 + 535824 = 347^2 + 732^2 .

It is a cyclic number.

It is not a de Polignac number, because 656233 - 2¹³ = 648041 is a prime.

It is a d-powerful number, because it can be written as 6 + 5⁷ + 2 + 6⁶ + 3 + 3¹² .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 656198 and 656207.

It is not an unprimeable number, because it can be changed into a prime (656237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66 + ... + 1147.

It is an arithmetic number, because the mean of its divisors is an integer number (164497).

2⁶⁵⁶²³³ is an apocalyptic number.

It is an amenable number.

656233 is a deficient number, since it is larger than the sum of its proper divisors (1755).

656233 is a wasteful number, since it uses less digits than its factorization.

656233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754.

The product of its digits is 3240, while the sum is 25.

The square root of 656233 is about 810.0820946052. The cubic root of 656233 is about 86.8999157353.

Adding to 656233 its reverse (332656), we get a palindrome (988889).

The spelling of 656233 in words is "six hundred fifty-six thousand, two hundred thirty-three".