165709797 has 8 divisors (see below), whose sum is σ = 241032480. Its totient is φ = 100430160.

The previous prime is 165709783. The next prime is 165709837. The reversal of 165709797 is 797907561.

165709797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165709797 - 2¹¹ = 165707749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165709777) 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, 2510722 + ... + 2510787.

It is an arithmetic number, because the mean of its divisors is an integer number (30129060).

Almost surely, 2^165709797 is an apocalyptic number.

It is an amenable number.

165709797 is a deficient number, since it is larger than the sum of its proper divisors (75322683).

165709797 is a wasteful number, since it uses less digits than its factorization.

165709797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021523.

The product of its (nonzero) digits is 833490, while the sum is 51.

The square root of 165709797 is about 12872.8317397533. The cubic root of 165709797 is about 549.2660148584.

The spelling of 165709797 in words is "one hundred sixty-five million, seven hundred nine thousand, seven hundred ninety-seven".