66422193 has 8 divisors (see below), whose sum is σ = 88637088. Its totient is φ = 44244384.

The previous prime is 66422171. The next prime is 66422201. The reversal of 66422193 is 39122466.

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

It is not a de Polignac number, because 66422193 - 2⁶ = 66422129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66422693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4780 + ... + 12477.

It is an arithmetic number, because the mean of its divisors is an integer number (11079636).

Almost surely, 2^66422193 is an apocalyptic number.

It is an amenable number.

66422193 is a deficient number, since it is larger than the sum of its proper divisors (22214895).

66422193 is a wasteful number, since it uses less digits than its factorization.

66422193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18543.

The product of its digits is 15552, while the sum is 33.

The square root of 66422193 is about 8149.9811656224. The cubic root of 66422193 is about 404.9838798644.

The spelling of 66422193 in words is "sixty-six million, four hundred twenty-two thousand, one hundred ninety-three".