445618 has 8 divisors (see below), whose sum is σ = 675612. Its totient is φ = 220416.

The previous prime is 445597. The next prime is 445619. The reversal of 445618 is 816544.

It can be written as a sum of positive squares in 2 ways, for example, as 444889 + 729 = 667^2 + 27^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 955 + ... + 1342.

2⁴⁴⁵⁶¹⁸ is an apocalyptic number.

445618 is a deficient number, since it is larger than the sum of its proper divisors (229994).

445618 is a wasteful number, since it uses less digits than its factorization.

445618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396.

The product of its digits is 3840, while the sum is 28.

The square root of 445618 is about 667.5462530791. The cubic root of 445618 is about 76.3813930912.

It can be divided in two parts, 4456 and 18, that multiplied together give a palindrome (80208).

The spelling of 445618 in words is "four hundred forty-five thousand, six hundred eighteen".