165310655 has 8 divisors (see below), whose sum is σ = 198498384. Its totient is φ = 132164800.

The previous prime is 165310627. The next prime is 165310661. The reversal of 165310655 is 556013561.

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

It is not a de Polignac number, because 165310655 - 2²⁶ = 98201791 is a prime.

It is a super-2 number, since 2×165310655² = 54655225313058050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1001 + ... + 18210.

It is an arithmetic number, because the mean of its divisors is an integer number (24812298).

Almost surely, 2^165310655 is an apocalyptic number.

165310655 is a deficient number, since it is larger than the sum of its proper divisors (33187729).

165310655 is a wasteful number, since it uses less digits than its factorization.

165310655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20937.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 165310655 is about 12857.3191218076. The cubic root of 165310655 is about 548.8246581451.

The spelling of 165310655 in words is "one hundred sixty-five million, three hundred ten thousand, six hundred fifty-five".