63820266 has 16 divisors (see below), whose sum is σ = 130356864. Its totient is φ = 20820704.

The previous prime is 63820249. The next prime is 63820279. The reversal of 63820266 is 66202836.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

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, 112875 + ... + 113438.

It is an arithmetic number, because the mean of its divisors is an integer number (8147304).

Almost surely, 2^63820266 is an apocalyptic number.

63820266 is an abundant number, since it is smaller than the sum of its proper divisors (66536598).

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

63820266 is a wasteful number, since it uses less digits than its factorization.

63820266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226365.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 63820266 is about 7988.7587271115. The cubic root of 63820266 is about 399.6252030946.

The spelling of 63820266 in words is "sixty-three million, eight hundred twenty thousand, two hundred sixty-six".