445228765 has 8 divisors (see below), whose sum is σ = 538175160. Its totient is φ = 353582592.

The previous prime is 445228757. The next prime is 445228769. The reversal of 445228765 is 567822544.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9504889 + 435723876 = 3083^2 + 20874^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 445228765 - 2³ = 445228757 is a prime.

It is a super-3 number, since 3×445228765³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445228769) 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, 324300 + ... + 325669.

It is an arithmetic number, because the mean of its divisors is an integer number (67271895).

Almost surely, 2^445228765 is an apocalyptic number.

It is an amenable number.

445228765 is a deficient number, since it is larger than the sum of its proper divisors (92946395).

445228765 is a wasteful number, since it uses less digits than its factorization.

445228765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650111.

The product of its digits is 537600, while the sum is 43.

The square root of 445228765 is about 21100.4446635610. Note that the first 3 decimals coincide. The cubic root of 445228765 is about 763.5914760150.

The spelling of 445228765 in words is "four hundred forty-five million, two hundred twenty-eight thousand, seven hundred sixty-five".