64222642 has 8 divisors (see below), whose sum is σ = 105091632. Its totient is φ = 29192100.

The previous prime is 64222637. The next prime is 64222681. The reversal of 64222642 is 24622246.

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

It is a self number, because there is not a number n which added to its sum of digits gives 64222642.

It is an unprimeable number.

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, 1459584 + ... + 1459627.

It is an arithmetic number, because the mean of its divisors is an integer number (13136454).

Almost surely, 2^64222642 is an apocalyptic number.

64222642 is a deficient number, since it is larger than the sum of its proper divisors (40868990).

64222642 is a wasteful number, since it uses less digits than its factorization.

64222642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919224.

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

The square root of 64222642 is about 8013.9030440853. The cubic root of 64222642 is about 400.4633006740.

Adding to 64222642 its reverse (24622246), we get a palindrome (88844888).

The spelling of 64222642 in words is "sixty-four million, two hundred twenty-two thousand, six hundred forty-two".