66841228 has 12 divisors (see below), whose sum is σ = 118382040. Its totient is φ = 33017792.

The previous prime is 66841219. The next prime is 66841241. The reversal of 66841228 is 82214866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100333 + ... + 100996.

It is an arithmetic number, because the mean of its divisors is an integer number (9865170).

Almost surely, 2^66841228 is an apocalyptic number.

It is an amenable number.

66841228 is a deficient number, since it is larger than the sum of its proper divisors (51540812).

66841228 is a wasteful number, since it uses less digits than its factorization.

66841228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201416 (or 201414 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 66841228 is about 8175.6484758091. The cubic root of 66841228 is about 405.8337303588.

The spelling of 66841228 in words is "sixty-six million, eight hundred forty-one thousand, two hundred twenty-eight".