63378321 has 4 divisors (see below), whose sum is σ = 84504432. Its totient is φ = 42252212.

The previous prime is 63378313. The next prime is 63378323. The reversal of 63378321 is 12387336.

63378321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63378321 - 2³ = 63378313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63378323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10563051 + ... + 10563056.

It is an arithmetic number, because the mean of its divisors is an integer number (21126108).

Almost surely, 2^63378321 is an apocalyptic number.

It is an amenable number.

63378321 is a deficient number, since it is larger than the sum of its proper divisors (21126111).

63378321 is a wasteful number, since it uses less digits than its factorization.

63378321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21126110.

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

The square root of 63378321 is about 7961.0502447855. The cubic root of 63378321 is about 398.7006190098.

The spelling of 63378321 in words is "sixty-three million, three hundred seventy-eight thousand, three hundred twenty-one".