165247065 has 96 divisors (see below), whose sum is σ = 316293120. Its totient is φ = 79567488.

The previous prime is 165247039. The next prime is 165247067. The reversal of 165247065 is 560742561.

It is a happy number.

165247065 is a `hidden beast` number, since 1 + 6 + 524 + 70 + 65 = 666.

It is not a de Polignac number, because 165247065 - 2¹⁰ = 165246041 is a prime.

It is a super-2 number, since 2×165247065² = 54613184982228450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165247067) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2091696 + ... + 2091774.

It is an arithmetic number, because the mean of its divisors is an integer number (3294720).

Almost surely, 2^165247065 is an apocalyptic number.

165247065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165247065 is a deficient number, since it is larger than the sum of its proper divisors (151046055).

165247065 is a wasteful number, since it uses less digits than its factorization.

165247065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 165247065 is about 12854.8459734063. The cubic root of 165247065 is about 548.7542770477.

The spelling of 165247065 in words is "one hundred sixty-five million, two hundred forty-seven thousand, sixty-five".