165297797 has 16 divisors (see below), whose sum is σ = 197041152. Its totient is φ = 135682560.

The previous prime is 165297787. The next prime is 165297829. The reversal of 165297797 is 797792561.

It is a cyclic number.

It is not a de Polignac number, because 165297797 - 2⁶ = 165297733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165297787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17123 + ... + 24975.

It is an arithmetic number, because the mean of its divisors is an integer number (12315072).

Almost surely, 2^165297797 is an apocalyptic number.

It is an amenable number.

165297797 is a deficient number, since it is larger than the sum of its proper divisors (31743355).

165297797 is an equidigital number, since it uses as much as digits as its factorization.

165297797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7988.

The product of its digits is 1666980, while the sum is 53.

The square root of 165297797 is about 12856.8190856059. The cubic root of 165297797 is about 548.8104284303.

The spelling of 165297797 in words is "one hundred sixty-five million, two hundred ninety-seven thousand, seven hundred ninety-seven".