166006727 has 4 divisors (see below), whose sum is σ = 167201160. Its totient is φ = 164812296.

The previous prime is 166006721. The next prime is 166006747. The reversal of 166006727 is 727600661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166006727 - 2¹⁴ = 165990343 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 (166006721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597008 + ... + 597285.

It is an arithmetic number, because the mean of its divisors is an integer number (41800290).

Almost surely, 2^166006727 is an apocalyptic number.

166006727 is a deficient number, since it is larger than the sum of its proper divisors (1194433).

166006727 is a wasteful number, since it uses less digits than its factorization.

166006727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194432.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 166006727 is about 12884.3597823097. The cubic root of 166006727 is about 549.5938897409.

The spelling of 166006727 in words is "one hundred sixty-six million, six thousand, seven hundred twenty-seven".