63806922 has 36 divisors (see below), whose sum is σ = 144542034. Its totient is φ = 20341200.

The previous prime is 63806909. The next prime is 63806971. The reversal of 63806922 is 22960836.

It can be written as a sum of positive squares in only one way, i.e., 56565441 + 7241481 = 7521^2 + 2691^2 .

It is a super-2 number, since 2×63806922² = 8142646590228168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6172 + ... + 12872.

Almost surely, 2^63806922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63806922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72271017).

63806922 is an abundant number, since it is smaller than the sum of its proper divisors (80735112).

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

63806922 is a wasteful number, since it uses less digits than its factorization.

63806922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6755 (or 6729 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 63806922 is about 7987.9235098992. The cubic root of 63806922 is about 399.5973489831.

The spelling of 63806922 in words is "sixty-three million, eight hundred six thousand, nine hundred twenty-two".