66634422 has 16 divisors (see below), whose sum is σ = 133539840. Its totient is φ = 22166312.

The previous prime is 66634417. The next prime is 66634453. The reversal of 66634422 is 22443666.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8022 + ... + 14057.

It is an arithmetic number, because the mean of its divisors is an integer number (8346240).

Almost surely, 2^66634422 is an apocalyptic number.

66634422 is an abundant number, since it is smaller than the sum of its proper divisors (66905418).

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

66634422 is a wasteful number, since it uses less digits than its factorization.

66634422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22587.

The product of its digits is 41472, while the sum is 33.

The square root of 66634422 is about 8162.9909959524. The cubic root of 66634422 is about 405.4147496371.

The spelling of 66634422 in words is "sixty-six million, six hundred thirty-four thousand, four hundred twenty-two".