64222566 has 32 divisors (see below), whose sum is σ = 136378080. Its totient is φ = 20092416.

The previous prime is 64222547. The next prime is 64222573. The reversal of 64222566 is 66522246.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 51300 + ... + 52536.

It is an arithmetic number, because the mean of its divisors is an integer number (4261815).

Almost surely, 2^64222566 is an apocalyptic number.

64222566 is an abundant number, since it is smaller than the sum of its proper divisors (72155514).

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

64222566 is a wasteful number, since it uses less digits than its factorization.

64222566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768.

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

The square root of 64222566 is about 8013.8983023245. The cubic root of 64222566 is about 400.4631427068.

The spelling of 64222566 in words is "sixty-four million, two hundred twenty-two thousand, five hundred sixty-six".