165664335 has 8 divisors (see below), whose sum is σ = 265062960. Its totient is φ = 88354304.

The previous prime is 165664319. The next prime is 165664357. The reversal of 165664335 is 533466561.

It is a happy number.

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 165664335 - 2⁴ = 165664319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165664293 and 165664302.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 5522130 + ... + 5522159.

It is an arithmetic number, because the mean of its divisors is an integer number (33132870).

Almost surely, 2^165664335 is an apocalyptic number.

165664335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165664335 is a deficient number, since it is larger than the sum of its proper divisors (99398625).

165664335 is a wasteful number, since it uses less digits than its factorization.

165664335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11044297.

The product of its digits is 194400, while the sum is 39.

The square root of 165664335 is about 12871.0658066844. The cubic root of 165664335 is about 549.2157804206.

The spelling of 165664335 in words is "one hundred sixty-five million, six hundred sixty-four thousand, three hundred thirty-five".