166842601 has 8 divisors (see below), whose sum is σ = 168654600. Its totient is φ = 165040128.

The previous prime is 166842587. The next prime is 166842647. The reversal of 166842601 is 106248661.

It can be written as a sum of positive squares in 4 ways, for example, as 99520576 + 67322025 = 9976^2 + 8205^2 .

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 166842601 - 2⁹ = 166842089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166842661) 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, 36115 + ... + 40471.

It is an arithmetic number, because the mean of its divisors is an integer number (21081825).

Almost surely, 2^166842601 is an apocalyptic number.

It is an amenable number.

166842601 is a deficient number, since it is larger than the sum of its proper divisors (1811999).

166842601 is a wasteful number, since it uses less digits than its factorization.

166842601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 166842601 is about 12916.7565975364. The cubic root of 166842601 is about 550.5147808427.

The spelling of 166842601 in words is "one hundred sixty-six million, eight hundred forty-two thousand, six hundred one".