66559422 has 8 divisors (see below), whose sum is σ = 133118856. Its totient is φ = 22186472.

The previous prime is 66559417. The next prime is 66559453. The reversal of 66559422 is 22495566.

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

66559422 is an admirable number.

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, 5546613 + ... + 5546624.

It is an arithmetic number, because the mean of its divisors is an integer number (16639857).

Almost surely, 2^66559422 is an apocalyptic number.

66559422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66559422 is a wasteful number, since it uses less digits than its factorization.

66559422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11093242.

The product of its digits is 129600, while the sum is 39.

The square root of 66559422 is about 8158.3957981946. The cubic root of 66559422 is about 405.2625884355.

The spelling of 66559422 in words is "sixty-six million, five hundred fifty-nine thousand, four hundred twenty-two".