166636196 has 24 divisors (see below), whose sum is σ = 304746624. Its totient is φ = 79576640.

The previous prime is 166636147. The next prime is 166636199. The reversal of 166636196 is 691636661.

It is not an unprimeable number, because it can be changed into a prime (166636199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111776 + ... + 113256.

It is an arithmetic number, because the mean of its divisors is an integer number (12697776).

Almost surely, 2^166636196 is an apocalyptic number.

It is an amenable number.

166636196 is a deficient number, since it is larger than the sum of its proper divisors (138110428).

166636196 is a wasteful number, since it uses less digits than its factorization.

166636196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731 (or 2729 counting only the distinct ones).

The product of its digits is 209952, while the sum is 44.

The square root of 166636196 is about 12908.7643095689. The cubic root of 166636196 is about 550.2876687969.

The spelling of 166636196 in words is "one hundred sixty-six million, six hundred thirty-six thousand, one hundred ninety-six".