635423 has 2 divisors, whose sum is σ = 635424. Its totient is φ = 635422.

The previous prime is 635413. The next prime is 635431. The reversal of 635423 is 324536.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 635423 - 2⁶ = 635359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (635413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317711 + 317712.

It is an arithmetic number, because the mean of its divisors is an integer number (317712).

2⁶³⁵⁴²³ is an apocalyptic number.

635423 is a deficient number, since it is larger than the sum of its proper divisors (1).

635423 is an equidigital number, since it uses as much as digits as its factorization.

635423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 23.

The square root of 635423 is about 797.1342421449. The cubic root of 635423 is about 85.9714615963.

Adding to 635423 its reverse (324536), we get a palindrome (959959).

The spelling of 635423 in words is "six hundred thirty-five thousand, four hundred twenty-three".