666127233 has 20 divisors (see below), whose sum is σ = 1018225648. Its totient is φ = 433755000.

The previous prime is 666127229. The next prime is 666127247. The reversal of 666127233 is 332721666.

It is not a de Polignac number, because 666127233 - 2² = 666127229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666127223) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 92143 + ... + 99108.

Almost surely, 2^666127233 is an apocalyptic number.

It is an amenable number.

666127233 is a deficient number, since it is larger than the sum of its proper divisors (352098415).

666127233 is a wasteful number, since it uses less digits than its factorization.

666127233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191306 (or 191297 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 666127233 is about 25809.4407727095. The cubic root of 666127233 is about 873.3447818006.

Adding to 666127233 its reverse (332721666), we get a palindrome (998848899).

The spelling of 666127233 in words is "six hundred sixty-six million, one hundred twenty-seven thousand, two hundred thirty-three".