166560741 has 12 divisors (see below), whose sum is σ = 243292140. Its totient is φ = 109792320.

The previous prime is 166560739. The next prime is 166560761. The reversal of 166560741 is 147065661.

166560741 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 607 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 86099841 + 80460900 = 9279^2 + 8970^2 .

It is not a de Polignac number, because 166560741 - 2¹ = 166560739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166560696 and 166560705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166560731) 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, 103170 + ... + 104771.

It is an arithmetic number, because the mean of its divisors is an integer number (20274345).

Almost surely, 2^166560741 is an apocalyptic number.

It is an amenable number.

166560741 is a deficient number, since it is larger than the sum of its proper divisors (76731399).

166560741 is a wasteful number, since it uses less digits than its factorization.

166560741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208036 (or 208033 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 166560741 is about 12905.8413518840. The cubic root of 166560741 is about 550.2045971597.

The spelling of 166560741 in words is "one hundred sixty-six million, five hundred sixty thousand, seven hundred forty-one".