634223 has 2 divisors, whose sum is σ = 634224. Its totient is φ = 634222.

The previous prime is 634211. The next prime is 634237. The reversal of 634223 is 322436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634223 - 2⁶ = 634159 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 634195 and 634204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317111 + 317112.

It is an arithmetic number, because the mean of its divisors is an integer number (317112).

2⁶³⁴²²³ is an apocalyptic number.

634223 is a deficient number, since it is larger than the sum of its proper divisors (1).

634223 is an equidigital number, since it uses as much as digits as its factorization.

634223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 20.

The square root of 634223 is about 796.3811901345. The cubic root of 634223 is about 85.9173082920.

Adding to 634223 its reverse (322436), we get a palindrome (956659).

The spelling of 634223 in words is "six hundred thirty-four thousand, two hundred twenty-three".