656243 has 8 divisors (see below), whose sum is σ = 755040. Its totient is φ = 558720.

The previous prime is 656237. The next prime is 656263. The reversal of 656243 is 342656.

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

It is a cyclic number.

It is not a de Polignac number, because 656243 - 2⁸ = 655987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493 + ... + 1881.

It is an arithmetic number, because the mean of its divisors is an integer number (94380).

2⁶⁵⁶²⁴³ is an apocalyptic number.

656243 is a deficient number, since it is larger than the sum of its proper divisors (98797).

656243 is a wasteful number, since it uses less digits than its factorization.

656243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637.

The product of its digits is 4320, while the sum is 26.

The square root of 656243 is about 810.0882667957. The cubic root of 656243 is about 86.9003571409.

Adding to 656243 its reverse (342656), we get a palindrome (998899).

The spelling of 656243 in words is "six hundred fifty-six thousand, two hundred forty-three".