66342216 has 32 divisors (see below), whose sum is σ = 166593600. Its totient is φ = 22015680.

The previous prime is 66342203. The next prime is 66342251. The reversal of 66342216 is 61224366.

66342216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

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, 540 + ... + 11531.

It is an arithmetic number, because the mean of its divisors is an integer number (5206050).

Almost surely, 2^66342216 is an apocalyptic number.

It is an amenable number.

66342216 is an abundant number, since it is smaller than the sum of its proper divisors (100251384).

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

66342216 is a wasteful number, since it uses less digits than its factorization.

66342216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12309 (or 12305 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 66342216 is about 8145.0731120107. The cubic root of 66342216 is about 404.8212715418.

The spelling of 66342216 in words is "sixty-six million, three hundred forty-two thousand, two hundred sixteen".