164647 has 8 divisors (see below), whose sum is σ = 192896. Its totient is φ = 137592.

The previous prime is 164627. The next prime is 164653. The reversal of 164647 is 746461.

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

It is a de Polignac number, because none of the positive numbers 2^k-164647 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 (164617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28 + ... + 574.

It is an arithmetic number, because the mean of its divisors is an integer number (24112).

2¹⁶⁴⁶⁴⁷ is an apocalyptic number.

164647 is a deficient number, since it is larger than the sum of its proper divisors (28249).

164647 is an equidigital number, since it uses as much as digits as its factorization.

164647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597.

The product of its digits is 4032, while the sum is 28.

The square root of 164647 is about 405.7671746211. The cubic root of 164647 is about 54.8089237248.

It can be divided in two parts, 16464 and 7, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 164647 in words is "one hundred sixty-four thousand, six hundred forty-seven".