164336647 has 4 divisors (see below), whose sum is σ = 168778216. Its totient is φ = 159895080.

The previous prime is 164336593. The next prime is 164336659. The reversal of 164336647 is 746633461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164336647 - 2⁷ = 164336519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164336677) 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 3 ways as a sum of consecutive naturals, for example, 2220729 + ... + 2220802.

It is an arithmetic number, because the mean of its divisors is an integer number (42194554).

Almost surely, 2^164336647 is an apocalyptic number.

164336647 is a deficient number, since it is larger than the sum of its proper divisors (4441569).

164336647 is an equidigital number, since it uses as much as digits as its factorization.

164336647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4441568.

The product of its digits is 217728, while the sum is 40.

The square root of 164336647 is about 12819.3855937014. The cubic root of 164336647 is about 547.7446452238.

The spelling of 164336647 in words is "one hundred sixty-four million, three hundred thirty-six thousand, six hundred forty-seven".