166240244 has 6 divisors (see below), whose sum is σ = 290920434. Its totient is φ = 83120120.

The previous prime is 166240231. The next prime is 166240301. The reversal of 166240244 is 442042661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 111302500 + 54937744 = 10550^2 + 7412^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20780027 + ... + 20780034.

It is an arithmetic number, because the mean of its divisors is an integer number (48486739).

Almost surely, 2^166240244 is an apocalyptic number.

It is an amenable number.

166240244 is a deficient number, since it is larger than the sum of its proper divisors (124680190).

166240244 is a wasteful number, since it uses less digits than its factorization.

166240244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41560065 (or 41560063 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 166240244 is about 12893.4186312242. The cubic root of 166240244 is about 549.8514684315.

The spelling of 166240244 in words is "one hundred sixty-six million, two hundred forty thousand, two hundred forty-four".