66211322 has 8 divisors (see below), whose sum is σ = 100574400. Its totient is φ = 32686524.

The previous prime is 66211307. The next prime is 66211331. The reversal of 66211322 is 22311266.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 209372 + ... + 209687.

It is an arithmetic number, because the mean of its divisors is an integer number (12571800).

Almost surely, 2^66211322 is an apocalyptic number.

66211322 is a deficient number, since it is larger than the sum of its proper divisors (34363078).

66211322 is a wasteful number, since it uses less digits than its factorization.

66211322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419140.

The product of its digits is 864, while the sum is 23.

The square root of 66211322 is about 8137.0339805116. The cubic root of 66211322 is about 404.5548571525.

Adding to 66211322 its reverse (22311266), we get a palindrome (88522588).

The spelling of 66211322 in words is "sixty-six million, two hundred eleven thousand, three hundred twenty-two".