445642765 has 4 divisors (see below), whose sum is σ = 534771324. Its totient is φ = 356514208.

The previous prime is 445642723. The next prime is 445642781. The reversal of 445642765 is 567246544.

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

It can be written as a sum of positive squares in 2 ways, for example, as 316092841 + 129549924 = 17779^2 + 11382^2 .

It is a cyclic number.

It is not a de Polignac number, because 445642765 - 2²⁵ = 412088333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44564272 + ... + 44564281.

It is an arithmetic number, because the mean of its divisors is an integer number (133692831).

Almost surely, 2^445642765 is an apocalyptic number.

It is an amenable number.

445642765 is a deficient number, since it is larger than the sum of its proper divisors (89128559).

445642765 is an equidigital number, since it uses as much as digits as its factorization.

445642765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89128558.

The product of its digits is 806400, while the sum is 43.

The square root of 445642765 is about 21110.2526038889. The cubic root of 445642765 is about 763.8280801774.

The spelling of 445642765 in words is "four hundred forty-five million, six hundred forty-two thousand, seven hundred sixty-five".