66228884 has 24 divisors (see below), whose sum is σ = 118079808. Its totient is φ = 32497920.

The previous prime is 66228881. The next prime is 66228887. The reversal of 66228884 is 48882266.

66228884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66228881) and next prime (66228887).

It is a super-3 number, since 3×66228884³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66228881) by changing a digit.

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, 50177 + ... + 51479.

It is an arithmetic number, because the mean of its divisors is an integer number (4919992).

Almost surely, 2^66228884 is an apocalyptic number.

It is an amenable number.

66228884 is a deficient number, since it is larger than the sum of its proper divisors (51850924).

66228884 is a wasteful number, since it uses less digits than its factorization.

66228884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535 (or 1533 counting only the distinct ones).

The product of its digits is 294912, while the sum is 44.

The square root of 66228884 is about 8138.1130491042. The cubic root of 66228884 is about 404.5906222559.

The spelling of 66228884 in words is "sixty-six million, two hundred twenty-eight thousand, eight hundred eighty-four".