66560622 has 8 divisors (see below), whose sum is σ = 133121256. Its totient is φ = 22186872.

The previous prime is 66560617. The next prime is 66560639. The reversal of 66560622 is 22606566.

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

66560622 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 3 ways as a sum of consecutive naturals, for example, 5546713 + ... + 5546724.

It is an arithmetic number, because the mean of its divisors is an integer number (16640157).

Almost surely, 2^66560622 is an apocalyptic number.

66560622 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.

66560622 is a wasteful number, since it uses less digits than its factorization.

66560622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11093442.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 66560622 is about 8158.4693417332. The cubic root of 66560622 is about 405.2650239143.

The spelling of 66560622 in words is "sixty-six million, five hundred sixty thousand, six hundred twenty-two".