63638 has 8 divisors (see below), whose sum is σ = 97632. Its totient is φ = 31096.

The previous prime is 63629. The next prime is 63647. The reversal of 63638 is 83636.

It is an interprime number because it is at equal distance from previous prime (63629) and next prime (63647).

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

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

63638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245 + ... + 432.

It is an arithmetic number, because the mean of its divisors is an integer number (12204).

2⁶³⁶³⁸ is an apocalyptic number.

63638 is a deficient number, since it is larger than the sum of its proper divisors (33994).

63638 is a wasteful number, since it uses less digits than its factorization.

63638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726.

The product of its digits is 2592, while the sum is 26.

The square root of 63638 is about 252.2657329088. The cubic root of 63638 is about 39.9244406930.

The spelling of 63638 in words is "sixty-three thousand, six hundred thirty-eight".