66044022 has 16 divisors (see below), whose sum is σ = 144096192. Its totient is φ = 20013320.

The previous prime is 66044009. The next prime is 66044023. The reversal of 66044022 is 22044066.

It is a junction number, because it is equal to n+sod(n) for n = 66043983 and 66044001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66044023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500268 + ... + 500399.

It is an arithmetic number, because the mean of its divisors is an integer number (9006012).

Almost surely, 2^66044022 is an apocalyptic number.

66044022 is an abundant number, since it is smaller than the sum of its proper divisors (78052170).

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

66044022 is a wasteful number, since it uses less digits than its factorization.

66044022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000683.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 66044022 is about 8126.7473198076. The cubic root of 66044022 is about 404.2138323294.

Adding to 66044022 its reverse (22044066), we get a palindrome (88088088).

The spelling of 66044022 in words is "sixty-six million, forty-four thousand, twenty-two".