165623324 has 12 divisors (see below), whose sum is σ = 290769024. Its totient is φ = 82546464.

The previous prime is 165623317. The next prime is 165623327. The reversal of 165623324 is 423326561.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165623327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64892 + ... + 67395.

It is an arithmetic number, because the mean of its divisors is an integer number (24230752).

Almost surely, 2^165623324 is an apocalyptic number.

It is an amenable number.

165623324 is a deficient number, since it is larger than the sum of its proper divisors (125145700).

165623324 is a wasteful number, since it uses less digits than its factorization.

165623324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132604 (or 132602 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 165623324 is about 12869.4725610648. The cubic root of 165623324 is about 549.1704563476.

Adding to 165623324 its reverse (423326561), we get a palindrome (588949885).

The spelling of 165623324 in words is "one hundred sixty-five million, six hundred twenty-three thousand, three hundred twenty-four".