66222302 has 4 divisors (see below), whose sum is σ = 99333456. Its totient is φ = 33111150.

The previous prime is 66222301. The next prime is 66222307. The reversal of 66222302 is 20322266.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20322266 = 2 ⋅10161133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66222301) by changing a digit.

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 as a sum of consecutive naturals, namely, 16555574 + ... + 16555577.

It is an arithmetic number, because the mean of its divisors is an integer number (24833364).

Almost surely, 2^66222302 is an apocalyptic number.

66222302 is a deficient number, since it is larger than the sum of its proper divisors (33111154).

66222302 is a wasteful number, since it uses less digits than its factorization.

66222302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33111153.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 66222302 is about 8137.7086455587. The cubic root of 66222302 is about 404.5772187199.

Adding to 66222302 its reverse (20322266), we get a palindrome (86544568).

The spelling of 66222302 in words is "sixty-six million, two hundred twenty-two thousand, three hundred two".