165584969 has 4 divisors (see below), whose sum is σ = 180638160. Its totient is φ = 150531780.

The previous prime is 165584957. The next prime is 165584987. The reversal of 165584969 is 969485561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165584969 is a prime.

It is a super-2 number, since 2×165584969² = 54836763917461922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165584969.

It is not an unprimeable number, because it can be changed into a prime (165584999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7526579 + ... + 7526600.

It is an arithmetic number, because the mean of its divisors is an integer number (45159540).

Almost surely, 2^165584969 is an apocalyptic number.

It is an amenable number.

165584969 is a deficient number, since it is larger than the sum of its proper divisors (15053191).

165584969 is a wasteful number, since it uses less digits than its factorization.

165584969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15053190.

The product of its digits is 2332800, while the sum is 53.

The square root of 165584969 is about 12867.9823204728. The cubic root of 165584969 is about 549.1280608312.

The spelling of 165584969 in words is "one hundred sixty-five million, five hundred eighty-four thousand, nine hundred sixty-nine".