63812 has 24 divisors (see below), whose sum is σ = 133056. Its totient is φ = 26208.

The previous prime is 63809. The next prime is 63823. The reversal of 63812 is 21836.

63812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

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

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178 + ... + 1230.

It is an arithmetic number, because the mean of its divisors is an integer number (5544).

2⁶³⁸¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66528).

63812 is an abundant number, since it is smaller than the sum of its proper divisors (69244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63812 is a wasteful number, since it uses less digits than its factorization.

63812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 105 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 63812 is about 252.6103719169. The cubic root of 63812 is about 39.9607949199.

The spelling of 63812 in words is "sixty-three thousand, eight hundred twelve".