66334422 has 64 divisors (see below), whose sum is σ = 167952384. Its totient is φ = 16964640.

The previous prime is 66334421. The next prime is 66334439. The reversal of 66334422 is 22443366.

It is a happy number.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 66334422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66334421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29883 + ... + 32025.

It is an arithmetic number, because the mean of its divisors is an integer number (2624256).

Almost surely, 2^66334422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66334422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83976192).

66334422 is an abundant number, since it is smaller than the sum of its proper divisors (101617962).

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

66334422 is a wasteful number, since it uses less digits than its factorization.

66334422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233.

The product of its digits is 20736, while the sum is 30.

The square root of 66334422 is about 8144.5946492137. The cubic root of 66334422 is about 404.8054178830.

Adding to 66334422 its reverse (22443366), we get a palindrome (88777788).

It can be divided in two parts, 663344 and 22, that added together give a palindrome (663366).

The spelling of 66334422 in words is "sixty-six million, three hundred thirty-four thousand, four hundred twenty-two".