166563606 has 32 divisors (see below), whose sum is σ = 365073408. Its totient is φ = 50243040.

The previous prime is 166563601. The next prime is 166563613. The reversal of 166563606 is 606365661.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166563601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9060 + ... + 20376.

It is an arithmetic number, because the mean of its divisors is an integer number (11408544).

Almost surely, 2^166563606 is an apocalyptic number.

166563606 is an abundant number, since it is smaller than the sum of its proper divisors (198509802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166563606 is a wasteful number, since it uses less digits than its factorization.

166563606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11556.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 166563606 is about 12905.9523476573. The cubic root of 166563606 is about 550.2077518189.

The spelling of 166563606 in words is "one hundred sixty-six million, five hundred sixty-three thousand, six hundred six".