63643143 has 4 divisors (see below), whose sum is σ = 84857528. Its totient is φ = 42428760.

The previous prime is 63643117. The next prime is 63643157. The reversal of 63643143 is 34134636.

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

It is not a de Polignac number, because 63643143 - 2¹⁰ = 63642119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63643143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63643843) 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, 10607188 + ... + 10607193.

It is an arithmetic number, because the mean of its divisors is an integer number (21214382).

Almost surely, 2^63643143 is an apocalyptic number.

63643143 is a deficient number, since it is larger than the sum of its proper divisors (21214385).

63643143 is a wasteful number, since it uses less digits than its factorization.

63643143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21214384.

The product of its digits is 15552, while the sum is 30.

The square root of 63643143 is about 7977.6652599617. The cubic root of 63643143 is about 399.2551618178.

Adding to 63643143 its reverse (34134636), we get a palindrome (97777779).

The spelling of 63643143 in words is "sixty-three million, six hundred forty-three thousand, one hundred forty-three".