66422194 has 8 divisors (see below), whose sum is σ = 99740700. Its totient is φ = 33175296.

The previous prime is 66422171. The next prime is 66422201. The reversal of 66422194 is 49122466.

It can be written as a sum of positive squares in 2 ways, for example, as 58721569 + 7700625 = 7663^2 + 2775^2 .

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

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, 15519 + ... + 19330.

Almost surely, 2^66422194 is an apocalyptic number.

66422194 is a deficient number, since it is larger than the sum of its proper divisors (33318506).

66422194 is a wasteful number, since it uses less digits than its factorization.

66422194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35804.

The product of its digits is 20736, while the sum is 34.

The square root of 66422194 is about 8149.9812269722. The cubic root of 66422194 is about 404.9838818968.

It can be divided in two parts, 6642 and 2194, that added together give a square (8836 = 94²).

The spelling of 66422194 in words is "sixty-six million, four hundred twenty-two thousand, one hundred ninety-four".