63630563 has 4 divisors (see below), whose sum is σ = 66979560. Its totient is φ = 60281568.

The previous prime is 63630559. The next prime is 63630571. The reversal of 63630563 is 36503636.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63630563 - 2² = 63630559 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (63638563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1674470 + ... + 1674507.

It is an arithmetic number, because the mean of its divisors is an integer number (16744890).

Almost surely, 2^63630563 is an apocalyptic number.

63630563 is a deficient number, since it is larger than the sum of its proper divisors (3348997).

63630563 is a wasteful number, since it uses less digits than its factorization.

63630563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348996.

The product of its (nonzero) digits is 29160, while the sum is 32.

The square root of 63630563 is about 7976.8767697640. The cubic root of 63630563 is about 399.2288538728.

The spelling of 63630563 in words is "sixty-three million, six hundred thirty thousand, five hundred sixty-three".