63563563 has 16 divisors (see below), whose sum is σ = 75418560. Its totient is φ = 52416000.

The previous prime is 63563551. The next prime is 63563567. The reversal of 63563563 is 36536536.

It is not a de Polignac number, because 63563563 - 2²¹ = 61466411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63563567) 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, 105463 + ... + 106063.

It is an arithmetic number, because the mean of its divisors is an integer number (4713660).

Almost surely, 2^63563563 is an apocalyptic number.

63563563 is a deficient number, since it is larger than the sum of its proper divisors (11854997).

63563563 is a wasteful number, since it uses less digits than its factorization.

63563563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158.

The product of its digits is 145800, while the sum is 37.

The square root of 63563563 is about 7972.6760250245. The cubic root of 63563563 is about 399.0886815736.

The spelling of 63563563 in words is "sixty-three million, five hundred sixty-three thousand, five hundred sixty-three".