64229221 has 8 divisors (see below), whose sum is σ = 73483200. Its totient is φ = 54994848.

The previous prime is 64229219. The next prime is 64229237. The reversal of 64229221 is 12292246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64229221 - 2¹ = 64229219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64229221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64229251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2970 + ... + 11716.

It is an arithmetic number, because the mean of its divisors is an integer number (9185400).

Almost surely, 2^64229221 is an apocalyptic number.

It is an amenable number.

64229221 is a deficient number, since it is larger than the sum of its proper divisors (9253979).

64229221 is a wasteful number, since it uses less digits than its factorization.

64229221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9803.

The product of its digits is 3456, while the sum is 28.

The square root of 64229221 is about 8014.3135077185. The cubic root of 64229221 is about 400.4769747616.

The spelling of 64229221 in words is "sixty-four million, two hundred twenty-nine thousand, two hundred twenty-one".