165642327 has 20 divisors (see below), whose sum is σ = 248260056. Its totient is φ = 110062800.

The previous prime is 165642317. The next prime is 165642349. The reversal of 165642327 is 723246561.

165642327 is a `hidden beast` number, since 1 + 6 + 5 + 642 + 3 + 2 + 7 = 666.

It is not a de Polignac number, because 165642327 - 2¹⁰ = 165641303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165642291 and 165642300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165642317) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22452 + ... + 28902.

Almost surely, 2^165642327 is an apocalyptic number.

165642327 is a deficient number, since it is larger than the sum of its proper divisors (82617729).

165642327 is an equidigital number, since it uses as much as digits as its factorization.

165642327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6780 (or 6771 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 165642327 is about 12870.2108374339. The cubic root of 165642327 is about 549.1914587983.

Adding to 165642327 its reverse (723246561), we get a palindrome (888888888).

The spelling of 165642327 in words is "one hundred sixty-five million, six hundred forty-two thousand, three hundred twenty-seven".