165330623 has 2 divisors, whose sum is σ = 165330624. Its totient is φ = 165330622.

The previous prime is 165330611. The next prime is 165330643. The reversal of 165330623 is 326033561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165330623 - 2¹⁰ = 165329599 is a prime.

It is a super-3 number, since 3×165330623³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165330643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82665311 + 82665312.

It is an arithmetic number, because the mean of its divisors is an integer number (82665312).

Almost surely, 2^165330623 is an apocalyptic number.

165330623 is a deficient number, since it is larger than the sum of its proper divisors (1).

165330623 is an equidigital number, since it uses as much as digits as its factorization.

165330623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 165330623 is about 12858.0956210475. The cubic root of 165330623 is about 548.8467549050.

The spelling of 165330623 in words is "one hundred sixty-five million, three hundred thirty thousand, six hundred twenty-three".