66124422 has 144 divisors (see below), whose sum is σ = 184242240. Its totient is φ = 16982784.

The previous prime is 66124417. The next prime is 66124433. The reversal of 66124422 is 22442166.

66124422 is a `hidden beast` number, since 6 + 612 + 4 + 42 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 836979 + ... + 837057.

It is an arithmetic number, because the mean of its divisors is an integer number (1279460).

Almost surely, 2^66124422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66124422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92121120).

66124422 is an abundant number, since it is smaller than the sum of its proper divisors (118117818).

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

66124422 is a wasteful number, since it uses less digits than its factorization.

66124422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 177 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 66124422 is about 8131.6924437659. The cubic root of 66124422 is about 404.3777917227.

Adding to 66124422 its reverse (22442166), we get a palindrome (88566588).

The spelling of 66124422 in words is "sixty-six million, one hundred twenty-four thousand, four hundred twenty-two".