634463 has 4 divisors (see below), whose sum is σ = 646488. Its totient is φ = 622440.

The previous prime is 634441. The next prime is 634471. The reversal of 634463 is 364436.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634463 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 (634483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5933 + ... + 6038.

It is an arithmetic number, because the mean of its divisors is an integer number (161622).

2⁶³⁴⁴⁶³ is an apocalyptic number.

634463 is a deficient number, since it is larger than the sum of its proper divisors (12025).

634463 is a wasteful number, since it uses less digits than its factorization.

634463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12024.

The product of its digits is 5184, while the sum is 26.

The square root of 634463 is about 796.5318574922. The cubic root of 634463 is about 85.9281444140.

Adding to 634463 its reverse (364436), we get a palindrome (998899).

The spelling of 634463 in words is "six hundred thirty-four thousand, four hundred sixty-three".