63634 has 4 divisors (see below), whose sum is σ = 95454. Its totient is φ = 31816.

The previous prime is 63629. The next prime is 63647. The reversal of 63634 is 43636.

63634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 42025 + 21609 = 205^2 + 147^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15907 + ... + 15910.

2⁶³⁶³⁴ is an apocalyptic number.

63634 is a deficient number, since it is larger than the sum of its proper divisors (31820).

63634 is a wasteful number, since it uses less digits than its factorization.

63634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31819.

The product of its digits is 1296, while the sum is 22.

The square root of 63634 is about 252.2578046364. The cubic root of 63634 is about 39.9236041849.

It can be divided in two parts, 6363 and 4, that multiplied together give a palindrome (25452).

The spelling of 63634 in words is "sixty-three thousand, six hundred thirty-four".