66223532 has 12 divisors (see below), whose sum is σ = 120930096. Its totient is φ = 31672080.

The previous prime is 66223499. The next prime is 66223543. The reversal of 66223532 is 23532266.

It is a junction number, because it is equal to n+sod(n) for n = 66223495 and 66223504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359819 + ... + 360002.

It is an arithmetic number, because the mean of its divisors is an integer number (10077508).

Almost surely, 2^66223532 is an apocalyptic number.

It is an amenable number.

66223532 is a deficient number, since it is larger than the sum of its proper divisors (54706564).

66223532 is a wasteful number, since it uses less digits than its factorization.

66223532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719848 (or 719846 counting only the distinct ones).

The product of its digits is 12960, while the sum is 29.

The square root of 66223532 is about 8137.7842193069. The cubic root of 66223532 is about 404.5797235503.

Adding to 66223532 its reverse (23532266), we get a palindrome (89755798).

The spelling of 66223532 in words is "sixty-six million, two hundred twenty-three thousand, five hundred thirty-two".