66045522 has 16 divisors (see below), whose sum is σ = 132200640. Its totient is φ = 21996912.

The previous prime is 66045521. The next prime is 66045533. The reversal of 66045522 is 22554066.

It is a self number, because there is not a number n which added to its sum of digits gives 66045522.

It is not an unprimeable number, because it can be changed into a prime (66045521) 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, 4723 + ... + 12425.

It is an arithmetic number, because the mean of its divisors is an integer number (8262540).

Almost surely, 2^66045522 is an apocalyptic number.

66045522 is an abundant number, since it is smaller than the sum of its proper divisors (66155118).

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

66045522 is a wasteful number, since it uses less digits than its factorization.

66045522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9137.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 66045522 is about 8126.8396071290. The cubic root of 66045522 is about 404.2168924911.

Adding to 66045522 its reverse (22554066), we get a palindrome (88599588).

The spelling of 66045522 in words is "sixty-six million, forty-five thousand, five hundred twenty-two".