166601327 has 4 divisors (see below), whose sum is σ = 170664816. Its totient is φ = 162537840.

The previous prime is 166601321. The next prime is 166601341. The reversal of 166601327 is 723106661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 723106661 = 4729 ⋅152909.

It is a cyclic number.

It is not a de Polignac number, because 166601327 - 2⁴ = 166601311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166601293 and 166601302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166601321) 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, 2031683 + ... + 2031764.

It is an arithmetic number, because the mean of its divisors is an integer number (42666204).

Almost surely, 2^166601327 is an apocalyptic number.

166601327 is a deficient number, since it is larger than the sum of its proper divisors (4063489).

166601327 is an equidigital number, since it uses as much as digits as its factorization.

166601327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4063488.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 166601327 is about 12907.4136448787. The cubic root of 166601327 is about 550.2492831406.

Adding to 166601327 its reverse (723106661), we get a palindrome (889707988).

The spelling of 166601327 in words is "one hundred sixty-six million, six hundred one thousand, three hundred twenty-seven".