166350644 has 12 divisors (see below), whose sum is σ = 308238084. Its totient is φ = 78282624.

The previous prime is 166350629. The next prime is 166350647. The reversal of 166350644 is 446053661.

It can be written as a sum of positive squares in 2 ways, for example, as 153462544 + 12888100 = 12388^2 + 3590^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166350647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223099 + ... + 1223234.

It is an arithmetic number, because the mean of its divisors is an integer number (25686507).

Almost surely, 2^166350644 is an apocalyptic number.

It is an amenable number.

166350644 is a deficient number, since it is larger than the sum of its proper divisors (141887440).

166350644 is a wasteful number, since it uses less digits than its factorization.

166350644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446354 (or 2446352 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 166350644 is about 12897.6991746590. The cubic root of 166350644 is about 549.9731601227.

The spelling of 166350644 in words is "one hundred sixty-six million, three hundred fifty thousand, six hundred forty-four".