63334321 has 2 divisors, whose sum is σ = 63334322. Its totient is φ = 63334320.

The previous prime is 63334319. The next prime is 63334357. The reversal of 63334321 is 12343336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57760000 + 5574321 = 7600^2 + 2361^2 .

It is a cyclic number.

It is not a de Polignac number, because 63334321 - 2¹ = 63334319 is a prime.

It is a super-2 number, since 2×63334321² = 8022472433062082, which contains 22 as substring.

Together with 63334319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (63334021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31667160 + 31667161.

It is an arithmetic number, because the mean of its divisors is an integer number (31667161).

Almost surely, 2^63334321 is an apocalyptic number.

It is an amenable number.

63334321 is a deficient number, since it is larger than the sum of its proper divisors (1).

63334321 is an equidigital number, since it uses as much as digits as its factorization.

63334321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 25.

The square root of 63334321 is about 7958.2863105068. The cubic root of 63334321 is about 398.6083325193.

Adding to 63334321 its reverse (12343336), we get a palindrome (75677657).

The spelling of 63334321 in words is "sixty-three million, three hundred thirty-four thousand, three hundred twenty-one".