166640368 has 10 divisors (see below), whose sum is σ = 322865744. Its totient is φ = 83320176.

The previous prime is 166640363. The next prime is 166640377. The reversal of 166640368 is 863046661.

It is a self number, because there is not a number n which added to its sum of digits gives 166640368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166640363) 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 as a sum of consecutive naturals, namely, 5207496 + ... + 5207527.

Almost surely, 2^166640368 is an apocalyptic number.

It is an amenable number.

166640368 is a deficient number, since it is larger than the sum of its proper divisors (156225376).

166640368 is a wasteful number, since it uses less digits than its factorization.

166640368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10415031 (or 10415025 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 166640368 is about 12908.9259041951. The cubic root of 166640368 is about 550.2922611985.

The spelling of 166640368 in words is "one hundred sixty-six million, six hundred forty thousand, three hundred sixty-eight".