445716506 has 8 divisors (see below), whose sum is σ = 707902740. Its totient is φ = 209748928.

The previous prime is 445716473. The next prime is 445716511. The reversal of 445716506 is 605617544.

It can be written as a sum of positive squares in 2 ways, for example, as 443481481 + 2235025 = 21059^2 + 1495^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 445716506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6554621 + ... + 6554688.

Almost surely, 2^445716506 is an apocalyptic number.

445716506 is a deficient number, since it is larger than the sum of its proper divisors (262186234).

445716506 is a wasteful number, since it uses less digits than its factorization.

445716506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13109328.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 445716506 is about 21111.9991000379. Note that the first 3 decimals coincide. The cubic root of 445716506 is about 763.8702083456.

Adding to 445716506 its sum of digits (38), we get a square (445716544 = 21112²).

The spelling of 445716506 in words is "four hundred forty-five million, seven hundred sixteen thousand, five hundred six".