64222656 has 28 divisors (see below), whose sum is σ = 169922952. Its totient is φ = 21407488.

The previous prime is 64222637. The next prime is 64222681. The reversal of 64222656 is 65622246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167055 + ... + 167438.

Almost surely, 2^64222656 is an apocalyptic number.

It is an amenable number.

64222656 is an abundant number, since it is smaller than the sum of its proper divisors (105700296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64222656 is a wasteful number, since it uses less digits than its factorization.

64222656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334508 (or 334498 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 64222656 is about 8013.9039175673. The cubic root of 64222656 is about 400.4633297733.

The spelling of 64222656 in words is "sixty-four million, two hundred twenty-two thousand, six hundred fifty-six".