165340506 has 16 divisors (see below), whose sum is σ = 331336800. Its totient is φ = 55004208.

The previous prime is 165340499. The next prime is 165340507. The reversal of 165340506 is 605043561.

It is not an unprimeable number, because it can be changed into a prime (165340507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24016 + ... + 30123.

It is an arithmetic number, because the mean of its divisors is an integer number (20708550).

Almost surely, 2^165340506 is an apocalyptic number.

165340506 is an abundant number, since it is smaller than the sum of its proper divisors (165996294).

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

165340506 is a wasteful number, since it uses less digits than its factorization.

165340506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54653.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 165340506 is about 12858.4799257144. The cubic root of 165340506 is about 548.8576908593.

The spelling of 165340506 in words is "one hundred sixty-five million, three hundred forty thousand, five hundred six".