66807422 has 16 divisors (see below), whose sum is σ = 112277232. Its totient is φ = 29545920.

The previous prime is 66807397. The next prime is 66807427. The reversal of 66807422 is 22470866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66807427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40223 + ... + 41850.

It is an arithmetic number, because the mean of its divisors is an integer number (7017327).

Almost surely, 2^66807422 is an apocalyptic number.

66807422 is a deficient number, since it is larger than the sum of its proper divisors (45469810).

66807422 is a wasteful number, since it uses less digits than its factorization.

66807422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82123.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 66807422 is about 8173.5807330692. The cubic root of 66807422 is about 405.7652998949.

The spelling of 66807422 in words is "sixty-six million, eight hundred seven thousand, four hundred twenty-two".