63268821 has 24 divisors (see below), whose sum is σ = 113939904. Its totient is φ = 32866560.

The previous prime is 63268819. The next prime is 63268831. The reversal of 63268821 is 12886236.

It is not a de Polignac number, because 63268821 - 2¹ = 63268819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63268801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44956 + ... + 46341.

It is an arithmetic number, because the mean of its divisors is an integer number (4747496).

Almost surely, 2^63268821 is an apocalyptic number.

It is an amenable number.

63268821 is a deficient number, since it is larger than the sum of its proper divisors (50671083).

63268821 is a wasteful number, since it uses less digits than its factorization.

63268821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91321 (or 91318 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 63268821 is about 7954.1700384138. The cubic root of 63268821 is about 398.4708722866.

The spelling of 63268821 in words is "sixty-three million, two hundred sixty-eight thousand, eight hundred twenty-one".