666227243 has 8 divisors (see below), whose sum is σ = 727498800. Its totient is φ = 605073280.

The previous prime is 666227239. The next prime is 666227249. The reversal of 666227243 is 342722666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 666227243 - 2² = 666227239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 666227197 and 666227206.

It is not an unprimeable number, because it can be changed into a prime (666227249) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17330 + ... + 40407.

It is an arithmetic number, because the mean of its divisors is an integer number (90937350).

Almost surely, 2^666227243 is an apocalyptic number.

666227243 is a deficient number, since it is larger than the sum of its proper divisors (61271557).

666227243 is a wasteful number, since it uses less digits than its factorization.

666227243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58797.

The product of its digits is 145152, while the sum is 38.

The square root of 666227243 is about 25811.3781693268. The cubic root of 666227243 is about 873.3884865848.

The spelling of 666227243 in words is "six hundred sixty-six million, two hundred twenty-seven thousand, two hundred forty-three".