165242685 has 8 divisors (see below), whose sum is σ = 264388320. Its totient is φ = 88129424.

The previous prime is 165242681. The next prime is 165242689. The reversal of 165242685 is 586242561.

It is an interprime number because it is at equal distance from previous prime (165242681) and next prime (165242689).

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

It is a cyclic number.

It is not a de Polignac number, because 165242685 - 2² = 165242681 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165242681) 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, 5508075 + ... + 5508104.

It is an arithmetic number, because the mean of its divisors is an integer number (33048540).

Almost surely, 2^165242685 is an apocalyptic number.

165242685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165242685 is a deficient number, since it is larger than the sum of its proper divisors (99145635).

165242685 is a wasteful number, since it uses less digits than its factorization.

165242685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11016187.

The product of its digits is 115200, while the sum is 39.

The square root of 165242685 is about 12854.6756085091. The cubic root of 165242685 is about 548.7494286207.

The spelling of 165242685 in words is "one hundred sixty-five million, two hundred forty-two thousand, six hundred eighty-five".