445623 has 8 divisors (see below), whose sum is σ = 601200. Its totient is φ = 293568.

The previous prime is 445619. The next prime is 445631. The reversal of 445623 is 326544.

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

It is not a de Polignac number, because 445623 - 2² = 445619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 445593 and 445602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445633) 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, 568 + ... + 1101.

It is an arithmetic number, because the mean of its divisors is an integer number (75150).

2⁴⁴⁵⁶²³ is an apocalyptic number.

445623 is a deficient number, since it is larger than the sum of its proper divisors (155577).

445623 is a wasteful number, since it uses less digits than its factorization.

445623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761.

The product of its digits is 2880, while the sum is 24.

The square root of 445623 is about 667.5499981275. The cubic root of 445623 is about 76.3816787661.

The spelling of 445623 in words is "four hundred forty-five thousand, six hundred twenty-three".