66446622 has 32 divisors (see below), whose sum is σ = 161084160. Its totient is φ = 20135160.

The previous prime is 66446621. The next prime is 66446651. The reversal of 66446622 is 22664466.

66446622 is a `hidden beast` number, since 6 + 644 + 6 + 6 + 2 + 2 = 666.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66446621) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 55338 + ... + 56525.

It is an arithmetic number, because the mean of its divisors is an integer number (5033880).

Almost surely, 2^66446622 is an apocalyptic number.

66446622 is an abundant number, since it is smaller than the sum of its proper divisors (94637538).

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

66446622 is a wasteful number, since it uses less digits than its factorization.

66446622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111885 (or 111879 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 66446622 is about 8151.4797429669. The cubic root of 66446622 is about 405.0335226024.

The spelling of 66446622 in words is "sixty-six million, four hundred forty-six thousand, six hundred twenty-two".