165669827 has 2 divisors, whose sum is σ = 165669828. Its totient is φ = 165669826.

The previous prime is 165669799. The next prime is 165669869. The reversal of 165669827 is 728966561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165669827 - 2⁸ = 165669571 is a prime.

It is not a weakly prime, because it can be changed into another prime (165669887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82834913 + 82834914.

It is an arithmetic number, because the mean of its divisors is an integer number (82834914).

Almost surely, 2^165669827 is an apocalyptic number.

165669827 is a deficient number, since it is larger than the sum of its proper divisors (1).

165669827 is an equidigital number, since it uses as much as digits as its factorization.

165669827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 165669827 is about 12871.2791516617. The cubic root of 165669827 is about 549.2218494391.

The spelling of 165669827 in words is "one hundred sixty-five million, six hundred sixty-nine thousand, eight hundred twenty-seven".