66002210 has 16 divisors (see below), whose sum is σ = 121702392. Its totient is φ = 25756800.

The previous prime is 66002197. The next prime is 66002213. The reversal of 66002210 is 1220066.

It can be written as a sum of positive squares in 4 ways, for example, as 46226401 + 19775809 = 6799^2 + 4447^2 .

It is not an unprimeable number, because it can be changed into a prime (66002213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80081 + ... + 80900.

Almost surely, 2^66002210 is an apocalyptic number.

66002210 is a deficient number, since it is larger than the sum of its proper divisors (55700182).

66002210 is a wasteful number, since it uses less digits than its factorization.

66002210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161029.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 66002210 is about 8124.1744195949. The cubic root of 66002210 is about 404.1285126889.

Adding to 66002210 its reverse (1220066), we get a palindrome (67222276).

The spelling of 66002210 in words is "sixty-six million, two thousand, two hundred ten".