165727727 has 8 divisors (see below), whose sum is σ = 180935760. Its totient is φ = 150543360.

The previous prime is 165727711. The next prime is 165727759. The reversal of 165727727 is 727727561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165727727 - 2⁴ = 165727711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165727777) 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 7 ways as a sum of consecutive naturals, for example, 10799 + ... + 21167.

It is an arithmetic number, because the mean of its divisors is an integer number (22616970).

Almost surely, 2^165727727 is an apocalyptic number.

165727727 is a deficient number, since it is larger than the sum of its proper divisors (15208033).

165727727 is a wasteful number, since it uses less digits than its factorization.

165727727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11833.

The product of its digits is 288120, while the sum is 44.

The square root of 165727727 is about 12873.5281488798. The cubic root of 165727727 is about 549.2858245592.

The spelling of 165727727 in words is "one hundred sixty-five million, seven hundred twenty-seven thousand, seven hundred twenty-seven".