633968 has 10 divisors (see below), whose sum is σ = 1228344. Its totient is φ = 316976.

The previous prime is 633967. The next prime is 633991. The reversal of 633968 is 869336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19796 + ... + 19827.

2⁶³³⁹⁶⁸ is an apocalyptic number.

It is an amenable number.

633968 is a deficient number, since it is larger than the sum of its proper divisors (594376).

633968 is a wasteful number, since it uses less digits than its factorization.

633968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39631 (or 39625 counting only the distinct ones).

The product of its digits is 23328, while the sum is 35.

The square root of 633968 is about 796.2210748278. The cubic root of 633968 is about 85.9057919165.

The spelling of 633968 in words is "six hundred thirty-three thousand, nine hundred sixty-eight".