166166327 has 4 divisors (see below), whose sum is σ = 167127000. Its totient is φ = 165205656.

The previous prime is 166166281. The next prime is 166166339. The reversal of 166166327 is 723661661.

It is a happy number.

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 166166327 - 2¹⁶ = 166100791 is a prime.

It is a super-2 number, since 2×166166327² = 55222496457341858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166166227) 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, 480077 + ... + 480422.

It is an arithmetic number, because the mean of its divisors is an integer number (41781750).

Almost surely, 2^166166327 is an apocalyptic number.

166166327 is a deficient number, since it is larger than the sum of its proper divisors (960673).

166166327 is an equidigital number, since it uses as much as digits as its factorization.

166166327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960672.

The product of its digits is 54432, while the sum is 38.

The square root of 166166327 is about 12890.5518500955. The cubic root of 166166327 is about 549.7699610993.

The spelling of 166166327 in words is "one hundred sixty-six million, one hundred sixty-six thousand, three hundred twenty-seven".