63565263 has 16 divisors (see below), whose sum is σ = 94293760. Its totient is φ = 42321528.

The previous prime is 63565253. The next prime is 63565267. The reversal of 63565263 is 36256536.

It is not a de Polignac number, because 63565263 - 2⁴ = 63565247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63565267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38256 + ... + 39882.

It is an arithmetic number, because the mean of its divisors is an integer number (5893360).

Almost surely, 2^63565263 is an apocalyptic number.

63565263 is a deficient number, since it is larger than the sum of its proper divisors (30728497).

63565263 is a wasteful number, since it uses less digits than its factorization.

63565263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083 (or 3077 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

The square root of 63565263 is about 7972.7826384519. The cubic root of 63565263 is about 399.0922394018.

The spelling of 63565263 in words is "sixty-three million, five hundred sixty-five thousand, two hundred sixty-three".