633938 has 6 divisors (see below), whose sum is σ = 952599. Its totient is φ = 316406.

The previous prime is 633937. The next prime is 633943. The reversal of 633938 is 839336.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 316969 + 316969 = 563^2 + 563^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=563.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (633931) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 845 + ... + 1407.

2⁶³³⁹³⁸ is an apocalyptic number.

633938 is a deficient number, since it is larger than the sum of its proper divisors (318661).

633938 is an frugal number, since it uses more digits than its factorization.

633938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 565 counting only the distinct ones).

The product of its digits is 11664, while the sum is 32.

The square root of 633938 is about 796.2022356161. The cubic root of 633938 is about 85.9044368458.

Multiplying 633938 by its sum of digits (32), we get a square (20286016 = 4504²).

The spelling of 633938 in words is "six hundred thirty-three thousand, nine hundred thirty-eight".