635923 has 2 divisors, whose sum is σ = 635924. Its totient is φ = 635922.

The previous prime is 635917. The next prime is 635939. The reversal of 635923 is 329536.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 635923 - 2⁵ = 635891 is a prime.

635923 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 635891 and 635900.

It is not a weakly prime, because it can be changed into another prime (635983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317961 + 317962.

It is an arithmetic number, because the mean of its divisors is an integer number (317962).

2⁶³⁵⁹²³ is an apocalyptic number.

635923 is a deficient number, since it is larger than the sum of its proper divisors (1).

635923 is an equidigital number, since it uses as much as digits as its factorization.

635923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 28.

The square root of 635923 is about 797.4478039345. The cubic root of 635923 is about 85.9940053510.

The spelling of 635923 in words is "six hundred thirty-five thousand, nine hundred twenty-three".