666600244 has 6 divisors (see below), whose sum is σ = 1166550434. Its totient is φ = 333300120.

The previous prime is 666600227. The next prime is 666600257. The reversal of 666600244 is 442006666.

It can be written as a sum of positive squares in only one way, i.e., 585059344 + 81540900 = 24188^2 + 9030^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83325027 + ... + 83325034.

Almost surely, 2^666600244 is an apocalyptic number.

It is an amenable number.

666600244 is a deficient number, since it is larger than the sum of its proper divisors (499950190).

666600244 is a wasteful number, since it uses less digits than its factorization.

666600244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166650065 (or 166650063 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 666600244 is about 25818.6026732664. The cubic root of 666600244 is about 873.5514510007.

The spelling of 666600244 in words is "six hundred sixty-six million, six hundred thousand, two hundred forty-four".