66214008 has 96 divisors (see below), whose sum is σ = 207667200. Its totient is φ = 18667584.

The previous prime is 66214007. The next prime is 66214021. The reversal of 66214008 is 80041266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66214003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38985 + ... + 40647.

It is an arithmetic number, because the mean of its divisors is an integer number (2163200).

Almost surely, 2^66214008 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 66214008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103833600).

66214008 is an abundant number, since it is smaller than the sum of its proper divisors (141453192).

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

66214008 is a wasteful number, since it uses less digits than its factorization.

66214008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761 (or 1754 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 66214008 is about 8137.1990266922. The cubic root of 66214008 is about 404.5603276150.

The spelling of 66214008 in words is "sixty-six million, two hundred fourteen thousand, eight".