66011210 has 16 divisors (see below), whose sum is σ = 119873736. Its totient is φ = 26170368.

The previous prime is 66011207. The next prime is 66011227. The reversal of 66011210 is 1211066.

It is a happy number.

66011210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 48177481 + 17833729 = 6941^2 + 4223^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28079 + ... + 30338.

Almost surely, 2^66011210 is an apocalyptic number.

66011210 is a deficient number, since it is larger than the sum of its proper divisors (53862526).

66011210 is a wasteful number, since it uses less digits than its factorization.

66011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58537.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 66011210 is about 8124.7283031496. The cubic root of 66011210 is about 404.1468807168.

Adding to 66011210 its reverse (1211066), we get a palindrome (67222276).

The spelling of 66011210 in words is "sixty-six million, eleven thousand, two hundred ten".