445604 has 12 divisors (see below), whose sum is σ = 825804. Its totient is φ = 209664.

The previous prime is 445597. The next prime is 445619. The reversal of 445604 is 406544.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 252004 + 193600 = 502^2 + 440^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 445604.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 445604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3209 + ... + 3344.

It is an arithmetic number, because the mean of its divisors is an integer number (68817).

2⁴⁴⁵⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

445604 is a deficient number, since it is larger than the sum of its proper divisors (380200).

445604 is a wasteful number, since it uses less digits than its factorization.

445604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6574 (or 6572 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 445604 is about 667.5357668320. The cubic root of 445604 is about 76.3805931903.

Subtracting from 445604 its reverse (406544), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 445604 in words is "four hundred forty-five thousand, six hundred four".