164446 has 4 divisors (see below), whose sum is σ = 246672. Its totient is φ = 82222.

The previous prime is 164443. The next prime is 164447. The reversal of 164446 is 644461.

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

It is a self number, because there is not a number n which added to its sum of digits gives 164446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41110 + ... + 41113.

It is an arithmetic number, because the mean of its divisors is an integer number (61668).

2¹⁶⁴⁴⁴⁶ is an apocalyptic number.

164446 is a deficient number, since it is larger than the sum of its proper divisors (82226).

164446 is an equidigital number, since it uses as much as digits as its factorization.

164446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82225.

The product of its digits is 2304, while the sum is 25.

The square root of 164446 is about 405.5194200035. The cubic root of 164446 is about 54.7866111820.

The spelling of 164446 in words is "one hundred sixty-four thousand, four hundred forty-six".