166386027 has 16 divisors (see below), whose sum is σ = 226540800. Its totient is φ = 108587232.

The previous prime is 166386023. The next prime is 166386041. The reversal of 166386027 is 720683661.

It is not a de Polignac number, because 166386027 - 2² = 166386023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166386023) 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, 94368 + ... + 96114.

It is an arithmetic number, because the mean of its divisors is an integer number (14158800).

Almost surely, 2^166386027 is an apocalyptic number.

166386027 is a deficient number, since it is larger than the sum of its proper divisors (60154773).

166386027 is a wasteful number, since it uses less digits than its factorization.

166386027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 166386027 is about 12899.0707804865. The cubic root of 166386027 is about 550.0121506958.

The spelling of 166386027 in words is "one hundred sixty-six million, three hundred eighty-six thousand, twenty-seven".