166917027 has 16 divisors (see below), whose sum is σ = 234152352. Its totient is φ = 105626880.

The previous prime is 166917007. The next prime is 166917031. The reversal of 166917027 is 720719661.

It is not a de Polignac number, because 166917027 - 2¹² = 166912931 is a prime.

It is a super-2 number, since 2×166917027² = 55722587805037458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166917007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13788 + ... + 22889.

It is an arithmetic number, because the mean of its divisors is an integer number (14634522).

Almost surely, 2^166917027 is an apocalyptic number.

166917027 is a deficient number, since it is larger than the sum of its proper divisors (67235325).

166917027 is a wasteful number, since it uses less digits than its factorization.

166917027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36758.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 166917027 is about 12919.6372627098. The cubic root of 166917027 is about 550.5966274892.

The spelling of 166917027 in words is "one hundred sixty-six million, nine hundred seventeen thousand, twenty-seven".