165216633 has 8 divisors (see below), whose sum is σ = 220448928. Its totient is φ = 110064384.

The previous prime is 165216631. The next prime is 165216643. The reversal of 165216633 is 336612561.

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

It is not a de Polignac number, because 165216633 - 2¹ = 165216631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165216594 and 165216603.

It is not an unprimeable number, because it can be changed into a prime (165216631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15016 + ... + 23577.

It is an arithmetic number, because the mean of its divisors is an integer number (27556116).

Almost surely, 2^165216633 is an apocalyptic number.

It is an amenable number.

165216633 is a deficient number, since it is larger than the sum of its proper divisors (55232295).

165216633 is a wasteful number, since it uses less digits than its factorization.

165216633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40023.

The product of its digits is 19440, while the sum is 33.

The square root of 165216633 is about 12853.6622407779. The cubic root of 165216633 is about 548.7205886724.

The spelling of 165216633 in words is "one hundred sixty-five million, two hundred sixteen thousand, six hundred thirty-three".