66213010 has 16 divisors (see below), whose sum is σ = 119482200. Its totient is φ = 26418816.

The previous prime is 66212957. The next prime is 66213029. The reversal of 66213010 is 1031266.

66213010 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 62742241 + 3470769 = 7921^2 + 1863^2 .

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, 4005 + ... + 12184.

Almost surely, 2^66213010 is an apocalyptic number.

66213010 is a deficient number, since it is larger than the sum of its proper divisors (53269190).

66213010 is a wasteful number, since it uses less digits than its factorization.

66213010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16605.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 66213010 is about 8137.1377031484. The cubic root of 66213010 is about 404.5582950479.

Adding to 66213010 its reverse (1031266), we get a palindrome (67244276).

The spelling of 66213010 in words is "sixty-six million, two hundred thirteen thousand, ten".