66010222 has 8 divisors (see below), whose sum is σ = 102209472. Its totient is φ = 31940400.

The previous prime is 66010213. The next prime is 66010223. The reversal of 66010222 is 22201066.

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

It is a self number, because there is not a number n which added to its sum of digits gives 66010222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66010223) 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, 532279 + ... + 532402.

It is an arithmetic number, because the mean of its divisors is an integer number (12776184).

Almost surely, 2^66010222 is an apocalyptic number.

66010222 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

66010222 is a deficient number, since it is larger than the sum of its proper divisors (36199250).

66010222 is a wasteful number, since it uses less digits than its factorization.

66010222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064714.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 66010222 is about 8124.6675008889. The cubic root of 66010222 is about 404.1448643971.

Adding to 66010222 its reverse (22201066), we get a palindrome (88211288).

The spelling of 66010222 in words is "sixty-six million, ten thousand, two hundred twenty-two".