634403 has 18 divisors (see below), whose sum is σ = 818748. Its totient is φ = 489720.

The previous prime is 634397. The next prime is 634421. The reversal of 634403 is 304436.

It is a happy number.

634403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 634403 - 2¹⁰ = 633379 is a prime.

It is a super-3 number, since 3×634403³ = 765979133314106481, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (634483) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5876 + ... + 5982.

It is an arithmetic number, because the mean of its divisors is an integer number (45486).

2⁶³⁴⁴⁰³ is an apocalyptic number.

634403 is a deficient number, since it is larger than the sum of its proper divisors (184345).

634403 is a wasteful number, since it uses less digits than its factorization.

634403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 634403 is about 796.4941933247. The cubic root of 634403 is about 85.9254356398.

Adding to 634403 its reverse (304436), we get a palindrome (938839).

The spelling of 634403 in words is "six hundred thirty-four thousand, four hundred three".