164216633 has 4 divisors (see below), whose sum is σ = 187676160. Its totient is φ = 140757108.

The previous prime is 164216629. The next prime is 164216653. The reversal of 164216633 is 336612461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164216633 - 2² = 164216629 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 164216633.

It is not an unprimeable number, because it can be changed into a prime (164216653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11729753 + ... + 11729766.

It is an arithmetic number, because the mean of its divisors is an integer number (46919040).

Almost surely, 2^164216633 is an apocalyptic number.

It is an amenable number.

164216633 is a deficient number, since it is larger than the sum of its proper divisors (23459527).

164216633 is an equidigital number, since it uses as much as digits as its factorization.

164216633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23459526.

The product of its digits is 15552, while the sum is 32.

The square root of 164216633 is about 12814.7037812038. The cubic root of 164216633 is about 547.6112746174.

The spelling of 164216633 in words is "one hundred sixty-four million, two hundred sixteen thousand, six hundred thirty-three".