63871323 has 4 divisors (see below), whose sum is σ = 85161768. Its totient is φ = 42580880.

The previous prime is 63871319. The next prime is 63871343. The reversal of 63871323 is 32317836.

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 63871323 - 2² = 63871319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63871343) 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, 10645218 + ... + 10645223.

It is an arithmetic number, because the mean of its divisors is an integer number (21290442).

Almost surely, 2^63871323 is an apocalyptic number.

63871323 is a deficient number, since it is larger than the sum of its proper divisors (21290445).

63871323 is a wasteful number, since it uses less digits than its factorization.

63871323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21290444.

The product of its digits is 18144, while the sum is 33.

The square root of 63871323 is about 7991.9536410067. The cubic root of 63871323 is about 399.7317430524.

The spelling of 63871323 in words is "sixty-three million, eight hundred seventy-one thousand, three hundred twenty-three".