166271027 has 8 divisors (see below), whose sum is σ = 182096880. Its totient is φ = 150878880.

The previous prime is 166271023. The next prime is 166271029. The reversal of 166271027 is 720172661.

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 166271027 - 2² = 166271023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166270984 and 166271002.

It is not an unprimeable number, because it can be changed into a prime (166271023) 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, 107624 + ... + 109157.

It is an arithmetic number, because the mean of its divisors is an integer number (22762110).

Almost surely, 2^166271027 is an apocalyptic number.

166271027 is a deficient number, since it is larger than the sum of its proper divisors (15825853).

166271027 is a wasteful number, since it uses less digits than its factorization.

166271027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216853.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 166271027 is about 12894.6123245331. The cubic root of 166271027 is about 549.8854053265.

The spelling of 166271027 in words is "one hundred sixty-six million, two hundred seventy-one thousand, twenty-seven".