165216984 has 16 divisors (see below), whose sum is σ = 413042520. Its totient is φ = 55072320.

The previous prime is 165216977. The next prime is 165217001. The reversal of 165216984 is 489612561.

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, 3441997 + ... + 3442044.

Almost surely, 2^165216984 is an apocalyptic number.

It is an amenable number.

165216984 is an abundant number, since it is smaller than the sum of its proper divisors (247825536).

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

165216984 is a wasteful number, since it uses less digits than its factorization.

165216984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884050 (or 6884046 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 165216984 is about 12853.6758944669. The cubic root of 165216984 is about 548.7209772548.

The spelling of 165216984 in words is "one hundred sixty-five million, two hundred sixteen thousand, nine hundred eighty-four".