165630633 has 36 divisors (see below), whose sum is σ = 261826992. Its totient is φ = 92862000.

The previous prime is 165630631. The next prime is 165630637. The reversal of 165630633 is 336036561.

It is not a de Polignac number, because 165630633 - 2¹ = 165630631 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 165630594 and 165630603.

It is not an unprimeable number, because it can be changed into a prime (165630631) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 659758 + ... + 660008.

It is an arithmetic number, because the mean of its divisors is an integer number (7272972).

Almost surely, 2^165630633 is an apocalyptic number.

It is an amenable number.

165630633 is a deficient number, since it is larger than the sum of its proper divisors (96196359).

165630633 is an equidigital number, since it uses as much as digits as its factorization.

165630633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 33.

The square root of 165630633 is about 12869.7565245035. The cubic root of 165630633 is about 549.1785345734.

The spelling of 165630633 in words is "one hundred sixty-five million, six hundred thirty thousand, six hundred thirty-three".