63220663 has 4 divisors (see below), whose sum is σ = 68968008. Its totient is φ = 57473320.

The previous prime is 63220639. The next prime is 63220697. The reversal of 63220663 is 36602236.

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 63220663 - 2⁵ = 63220631 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 (63220063) 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, 2873656 + ... + 2873677.

It is an arithmetic number, because the mean of its divisors is an integer number (17242002).

Almost surely, 2^63220663 is an apocalyptic number.

63220663 is a deficient number, since it is larger than the sum of its proper divisors (5747345).

63220663 is a wasteful number, since it uses less digits than its factorization.

63220663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747344.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 63220663 is about 7951.1422449859. The cubic root of 63220663 is about 398.3697459560.

Adding to 63220663 its reverse (36602236), we get a palindrome (99822899).

The spelling of 63220663 in words is "sixty-three million, two hundred twenty thousand, six hundred sixty-three".