445656223 has 4 divisors (see below), whose sum is σ = 447177528. Its totient is φ = 444134920.

The previous prime is 445656203. The next prime is 445656251. The reversal of 445656223 is 322656544.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445656223 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 (445656203) 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, 760213 + ... + 760798.

It is an arithmetic number, because the mean of its divisors is an integer number (111794382).

Almost surely, 2^445656223 is an apocalyptic number.

445656223 is a deficient number, since it is larger than the sum of its proper divisors (1521305).

445656223 is a wasteful number, since it uses less digits than its factorization.

445656223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521304.

The product of its digits is 172800, while the sum is 37.

The square root of 445656223 is about 21110.5713565503. The cubic root of 445656223 is about 763.8357690676.

The spelling of 445656223 in words is "four hundred forty-five million, six hundred fifty-six thousand, two hundred twenty-three".