63642263 has 4 divisors (see below), whose sum is σ = 63757080. Its totient is φ = 63527448.

The previous prime is 63642259. The next prime is 63642281. The reversal of 63642263 is 36224636.

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 63642263 - 2² = 63642259 is a prime.

It is a super-2 number, since 2×63642263² = 8100675279522338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63642223) 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, 56573 + ... + 57686.

It is an arithmetic number, because the mean of its divisors is an integer number (15939270).

Almost surely, 2^63642263 is an apocalyptic number.

63642263 is a deficient number, since it is larger than the sum of its proper divisors (114817).

63642263 is a wasteful number, since it uses less digits than its factorization.

63642263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114816.

The product of its digits is 31104, while the sum is 32.

The square root of 63642263 is about 7977.6101057898. The cubic root of 63642263 is about 399.2533216291.

Adding to 63642263 its reverse (36224636), we get a palindrome (99866899).

The spelling of 63642263 in words is "sixty-three million, six hundred forty-two thousand, two hundred sixty-three".