64220446 has 8 divisors (see below), whose sum is σ = 97284744. Its totient is φ = 31792200.

The previous prime is 64220417. The next prime is 64220447. The reversal of 64220446 is 64402246.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64220447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158760 + ... + 159163.

It is an arithmetic number, because the mean of its divisors is an integer number (12160593).

Almost surely, 2^64220446 is an apocalyptic number.

64220446 is a deficient number, since it is larger than the sum of its proper divisors (33064298).

64220446 is a wasteful number, since it uses less digits than its factorization.

64220446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318026.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 64220446 is about 8013.7660310244. The cubic root of 64220446 is about 400.4587362016.

The spelling of 64220446 in words is "sixty-four million, two hundred twenty thousand, four hundred forty-six".