166605061 has 8 divisors (see below), whose sum is σ = 191246400. Its totient is φ = 142173888.

The previous prime is 166605059. The next prime is 166605097. The reversal of 166605061 is 160506661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166605061 - 2¹ = 166605059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166605001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50836 + ... + 54013.

It is an arithmetic number, because the mean of its divisors is an integer number (23905800).

Almost surely, 2^166605061 is an apocalyptic number.

It is an amenable number.

166605061 is a deficient number, since it is larger than the sum of its proper divisors (24641339).

166605061 is a wasteful number, since it uses less digits than its factorization.

166605061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105083.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 166605061 is about 12907.5582896224. The cubic root of 166605061 is about 550.2533939831.

The spelling of 166605061 in words is "one hundred sixty-six million, six hundred five thousand, sixty-one".