66882266 has 12 divisors (see below), whose sum is σ = 110273226. Its totient is φ = 30400920.

The previous prime is 66882259. The next prime is 66882287. The reversal of 66882266 is 66228866.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 56776225 + 10106041 = 7535^2 + 3179^2 .

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137945 + ... + 138428.

Almost surely, 2^66882266 is an apocalyptic number.

66882266 is a deficient number, since it is larger than the sum of its proper divisors (43390960).

66882266 is a wasteful number, since it uses less digits than its factorization.

66882266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276397 (or 276386 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 66882266 is about 8178.1578610345. The cubic root of 66882266 is about 405.9167689157.

The spelling of 66882266 in words is "sixty-six million, eight hundred eighty-two thousand, two hundred sixty-six".