633640253 has 8 divisors (see below), whose sum is σ = 668545920. Its totient is φ = 598890240.

The previous prime is 633640237. The next prime is 633640261. The reversal of 633640253 is 352046336.

633640253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 633640253 - 2⁴ = 633640237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633640153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30500 + ... + 46877.

It is an arithmetic number, because the mean of its divisors is an integer number (83568240).

Almost surely, 2^633640253 is an apocalyptic number.

It is an amenable number.

633640253 is a deficient number, since it is larger than the sum of its proper divisors (34905667).

633640253 is a wasteful number, since it uses less digits than its factorization.

633640253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77827.

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 633640253 is about 25172.2119210847. The cubic root of 633640253 is about 858.9098558621.

Adding to 633640253 its reverse (352046336), we get a palindrome (985686589).

The spelling of 633640253 in words is "six hundred thirty-three million, six hundred forty thousand, two hundred fifty-three".