66523422 has 32 divisors (see below), whose sum is σ = 152669952. Its totient is φ = 18929664.

The previous prime is 66523411. The next prime is 66523423. The reversal of 66523422 is 22432566.

It is a self number, because there is not a number n which added to its sum of digits gives 66523422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66523423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7713 + ... + 13875.

It is an arithmetic number, because the mean of its divisors is an integer number (4770936).

Almost surely, 2^66523422 is an apocalyptic number.

66523422 is an abundant number, since it is smaller than the sum of its proper divisors (86146530).

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

66523422 is a wasteful number, since it uses less digits than its factorization.

66523422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432.

The product of its digits is 17280, while the sum is 30.

The square root of 66523422 is about 8156.1891836813. The cubic root of 66523422 is about 405.1895104556.

Adding to 66523422 its reverse (22432566), we get a palindrome (88955988).

The spelling of 66523422 in words is "sixty-six million, five hundred twenty-three thousand, four hundred twenty-two".