165006500 has 48 divisors (see below), whose sum is σ = 361635456. Its totient is φ = 65772000.

The previous prime is 165006497. The next prime is 165006533. The reversal of 165006500 is 5600561.

165006500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261185 + ... + 261815.

It is an arithmetic number, because the mean of its divisors is an integer number (7534072).

Almost surely, 2^165006500 is an apocalyptic number.

165006500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165006500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180817728).

165006500 is an abundant number, since it is smaller than the sum of its proper divisors (196628956).

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

165006500 is a wasteful number, since it uses less digits than its factorization.

165006500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 165006500 is about 12845.4855883302. The cubic root of 165006500 is about 548.4878574199.

The spelling of 165006500 in words is "one hundred sixty-five million, six thousand, five hundred".