66222204 has 12 divisors (see below), whose sum is σ = 154518504. Its totient is φ = 22074064.

The previous prime is 66222199. The next prime is 66222209. The reversal of 66222204 is 40222266.

It is an interprime number because it is at equal distance from previous prime (66222199) and next prime (66222209).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66222209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2759247 + ... + 2759270.

It is an arithmetic number, because the mean of its divisors is an integer number (12876542).

Almost surely, 2^66222204 is an apocalyptic number.

It is an amenable number.

66222204 is an abundant number, since it is smaller than the sum of its proper divisors (88296300).

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

66222204 is a wasteful number, since it uses less digits than its factorization.

66222204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5518524 (or 5518522 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 66222204 is about 8137.7026242054. The cubic root of 66222204 is about 404.5770191467.

The spelling of 66222204 in words is "sixty-six million, two hundred twenty-two thousand, two hundred four".