66162210 has 32 divisors (see below), whose sum is σ = 159071040. Its totient is φ = 17611968.

The previous prime is 66162203. The next prime is 66162221. The reversal of 66162210 is 1226166.

66162210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 18876 + ... + 22104.

It is an arithmetic number, because the mean of its divisors is an integer number (4970970).

Almost surely, 2^66162210 is an apocalyptic number.

66162210 is an abundant number, since it is smaller than the sum of its proper divisors (92908830).

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

66162210 is a wasteful number, since it uses less digits than its factorization.

66162210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 66162210 is about 8134.0156134593. The cubic root of 66162210 is about 404.4548067280.

Adding to 66162210 its reverse (1226166), we get a palindrome (67388376).

The spelling of 66162210 in words is "sixty-six million, one hundred sixty-two thousand, two hundred ten".