64301221 has 4 divisors (see below), whose sum is σ = 65206944. Its totient is φ = 63395500.

The previous prime is 64301213. The next prime is 64301233. The reversal of 64301221 is 12210346.

64301221 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 64301221 - 2³ = 64301213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64301201) 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, 452755 + ... + 452896.

It is an arithmetic number, because the mean of its divisors is an integer number (16301736).

Almost surely, 2^64301221 is an apocalyptic number.

It is an amenable number.

64301221 is a deficient number, since it is larger than the sum of its proper divisors (905723).

64301221 is an equidigital number, since it uses as much as digits as its factorization.

64301221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905722.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 64301221 is about 8018.8042125993. The cubic root of 64301221 is about 400.6265617884.

Adding to 64301221 its reverse (12210346), we get a palindrome (76511567).

The spelling of 64301221 in words is "sixty-four million, three hundred one thousand, two hundred twenty-one".