165213606 has 8 divisors (see below), whose sum is σ = 330427224. Its totient is φ = 55071200.

The previous prime is 165213563. The next prime is 165213647. The reversal of 165213606 is 606312561.

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

165213606 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13767795 + ... + 13767806.

It is an arithmetic number, because the mean of its divisors is an integer number (41303403).

Almost surely, 2^165213606 is an apocalyptic number.

165213606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

165213606 is a wasteful number, since it uses less digits than its factorization.

165213606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27535606.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 165213606 is about 12853.5444916957. The cubic root of 165213606 is about 548.7172375422.

The spelling of 165213606 in words is "one hundred sixty-five million, two hundred thirteen thousand, six hundred six".