166940204 has 12 divisors (see below), whose sum is σ = 309330504. Its totient is φ = 78560064.

The previous prime is 166940203. The next prime is 166940209. The reversal of 166940204 is 402049661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (166940203) 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, 1227434 + ... + 1227569.

It is an arithmetic number, because the mean of its divisors is an integer number (25777542).

Almost surely, 2^166940204 is an apocalyptic number.

It is an amenable number.

166940204 is a deficient number, since it is larger than the sum of its proper divisors (142390300).

166940204 is a wasteful number, since it uses less digits than its factorization.

166940204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455024 (or 2455022 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 166940204 is about 12920.5341994826. The cubic root of 166940204 is about 550.6221103846.

Adding to 166940204 its reverse (402049661), we get a palindrome (568989865).

The spelling of 166940204 in words is "one hundred sixty-six million, nine hundred forty thousand, two hundred four".