66162208 has 48 divisors (see below), whose sum is σ = 152349120. Its totient is φ = 27691776.

The previous prime is 66162203. The next prime is 66162221. The reversal of 66162208 is 80226166.

It is a self number, because there is not a number n which added to its sum of digits gives 66162208.

It is not an unprimeable number, because it can be changed into a prime (66162203) 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, 6198 + ... + 13066.

It is an arithmetic number, because the mean of its divisors is an integer number (3173940).

Almost surely, 2^66162208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66162208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76174560).

66162208 is an abundant number, since it is smaller than the sum of its proper divisors (86186912).

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

66162208 is a wasteful number, since it uses less digits than its factorization.

66162208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6929 (or 6921 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 66162208 is about 8134.0154905188. The cubic root of 66162208 is about 404.4548026526.

The spelling of 66162208 in words is "sixty-six million, one hundred sixty-two thousand, two hundred eight".