165610005 has 96 divisors (see below), whose sum is σ = 322541568. Its totient is φ = 71808000.

The previous prime is 165609973. The next prime is 165610057. The reversal of 165610005 is 500016561.

It is not a de Polignac number, because 165610005 - 2⁵ = 165609973 is a prime.

It is a super-2 number, since 2×165610005² = 54853347512200050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 1096680 + ... + 1096830.

It is an arithmetic number, because the mean of its divisors is an integer number (3359808).

Almost surely, 2^165610005 is an apocalyptic number.

165610005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165610005 is a deficient number, since it is larger than the sum of its proper divisors (156931563).

165610005 is a wasteful number, since it uses less digits than its factorization.

165610005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 165610005 is about 12868.9550857869. The cubic root of 165610005 is about 549.1557349963.

Adding to 165610005 its reverse (500016561), we get a palindrome (665626566).

The spelling of 165610005 in words is "one hundred sixty-five million, six hundred ten thousand, five".