633242903 has 4 divisors (see below), whose sum is σ = 633383088. Its totient is φ = 633102720.

The previous prime is 633242899. The next prime is 633242933. The reversal of 633242903 is 309242336.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 633242903 - 2² = 633242899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 633242903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633242933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63083 + ... + 72428.

It is an arithmetic number, because the mean of its divisors is an integer number (158345772).

Almost surely, 2^633242903 is an apocalyptic number.

633242903 is a deficient number, since it is larger than the sum of its proper divisors (140185).

633242903 is a wasteful number, since it uses less digits than its factorization.

633242903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140184.

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 633242903 is about 25164.3180515586. The cubic root of 633242903 is about 858.7302801518.

The spelling of 633242903 in words is "six hundred thirty-three million, two hundred forty-two thousand, nine hundred three".