63384321 has 32 divisors (see below), whose sum is σ = 113476608. Its totient is φ = 30392640.

The previous prime is 63384311. The next prime is 63384329. The reversal of 63384321 is 12348336.

It is not a de Polignac number, because 63384321 - 2⁵ = 63384289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63384329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7551 + ... + 13556.

It is an arithmetic number, because the mean of its divisors is an integer number (3546144).

Almost surely, 2^63384321 is an apocalyptic number.

It is an amenable number.

63384321 is a deficient number, since it is larger than the sum of its proper divisors (50092287).

63384321 is a wasteful number, since it uses less digits than its factorization.

63384321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21141.

The product of its digits is 10368, while the sum is 30.

The square root of 63384321 is about 7961.4270705697. The cubic root of 63384321 is about 398.7132002216.

The spelling of 63384321 in words is "sixty-three million, three hundred eighty-four thousand, three hundred twenty-one".