165906610 has 16 divisors (see below), whose sum is σ = 300536856. Its totient is φ = 65939328.

The previous prime is 165906581. The next prime is 165906617. The reversal of 165906610 is 16609561.

165906610 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 140635881 + 25270729 = 11859^2 + 5027^2 .

It is not an unprimeable number, because it can be changed into a prime (165906617) 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 7 ways as a sum of consecutive naturals, for example, 51267 + ... + 54406.

Almost surely, 2^165906610 is an apocalyptic number.

165906610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165906610 is a deficient number, since it is larger than the sum of its proper divisors (134630246).

165906610 is a wasteful number, since it uses less digits than its factorization.

165906610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105837.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 165906610 is about 12880.4739819620. The cubic root of 165906610 is about 549.4833826597.

The spelling of 165906610 in words is "one hundred sixty-five million, nine hundred six thousand, six hundred ten".