166766201 has 8 divisors (see below), whose sum is σ = 190819200. Its totient is φ = 142770528.

The previous prime is 166766189. The next prime is 166766207. The reversal of 166766201 is 102667661.

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 166766201 - 2⁶ = 166766137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166766207) 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, 7901 + ... + 19898.

It is an arithmetic number, because the mean of its divisors is an integer number (23852400).

Almost surely, 2^166766201 is an apocalyptic number.

It is an amenable number.

166766201 is a deficient number, since it is larger than the sum of its proper divisors (24052999).

166766201 is an equidigital number, since it uses as much as digits as its factorization.

166766201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28663.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 166766201 is about 12913.7988601341. The cubic root of 166766201 is about 550.4307380572.

The spelling of 166766201 in words is "one hundred sixty-six million, seven hundred sixty-six thousand, two hundred one".