165064540 has 12 divisors (see below), whose sum is σ = 346635576. Its totient is φ = 66025808.

The previous prime is 165064531. The next prime is 165064591. The reversal of 165064540 is 45460561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4126594 + ... + 4126633.

It is an arithmetic number, because the mean of its divisors is an integer number (28886298).

Almost surely, 2^165064540 is an apocalyptic number.

165064540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165064540 is an abundant number, since it is smaller than the sum of its proper divisors (181571036).

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

165064540 is a wasteful number, since it uses less digits than its factorization.

165064540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8253236 (or 8253234 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 165064540 is about 12847.7445491417. The cubic root of 165064540 is about 548.5521589343.

The spelling of 165064540 in words is "one hundred sixty-five million, sixty-four thousand, five hundred forty".