165623337 has 12 divisors (see below), whose sum is σ = 260982384. Its totient is φ = 100377720.

The previous prime is 165623327. The next prime is 165623369. The reversal of 165623337 is 733326561.

It is not a de Polignac number, because 165623337 - 2¹¹ = 165621289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165623317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 836383 + ... + 836580.

It is an arithmetic number, because the mean of its divisors is an integer number (21748532).

Almost surely, 2^165623337 is an apocalyptic number.

It is an amenable number.

165623337 is a deficient number, since it is larger than the sum of its proper divisors (95359047).

165623337 is a wasteful number, since it uses less digits than its factorization.

165623337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672980 (or 1672977 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 165623337 is about 12869.4730661360. The cubic root of 165623337 is about 549.1704707160.

Adding to 165623337 its reverse (733326561), we get a palindrome (898949898).

The spelling of 165623337 in words is "one hundred sixty-five million, six hundred twenty-three thousand, three hundred thirty-seven".