165210006 has 64 divisors (see below), whose sum is σ = 364654080. Its totient is φ = 49888800.

The previous prime is 165209981. The next prime is 165210011. The reversal of 165210006 is 600012561.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1094031 + ... + 1094181.

It is an arithmetic number, because the mean of its divisors is an integer number (5697720).

Almost surely, 2^165210006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165210006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182327040).

165210006 is an abundant number, since it is smaller than the sum of its proper divisors (199444074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165210006 is a wasteful number, since it uses less digits than its factorization.

165210006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 165210006 is about 12853.4044517396. The cubic root of 165210006 is about 548.7132520020.

Adding to 165210006 its reverse (600012561), we get a palindrome (765222567).

The spelling of 165210006 in words is "one hundred sixty-five million, two hundred ten thousand, six".