166604049 has 12 divisors (see below), whose sum is σ = 245771136. Its totient is φ = 108705912.

The previous prime is 166604047. The next prime is 166604051. The reversal of 166604049 is 940406661.

166604049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166604047) and next prime (166604051).

It is not a de Polignac number, because 166604049 - 2¹ = 166604047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166604047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196509 + ... + 197354.

It is an arithmetic number, because the mean of its divisors is an integer number (20480928).

Almost surely, 2^166604049 is an apocalyptic number.

It is an amenable number.

166604049 is a deficient number, since it is larger than the sum of its proper divisors (79167087).

166604049 is a wasteful number, since it uses less digits than its factorization.

166604049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393916 (or 393913 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 166604049 is about 12907.5190877256. The cubic root of 166604049 is about 550.2522798562.

The spelling of 166604049 in words is "one hundred sixty-six million, six hundred four thousand, forty-nine".