445560649 has 4 divisors (see below), whose sum is σ = 446527620. Its totient is φ = 444593680.

The previous prime is 445560607. The next prime is 445560671. The reversal of 445560649 is 946065544.

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 240870400 + 204690249 = 15520^2 + 14307^2 .

It is a cyclic number.

It is not a de Polignac number, because 445560649 - 2¹¹ = 445558601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445560679) 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, 482794 + ... + 483715.

It is an arithmetic number, because the mean of its divisors is an integer number (111631905).

Almost surely, 2^445560649 is an apocalyptic number.

It is an amenable number.

445560649 is a deficient number, since it is larger than the sum of its proper divisors (966971).

445560649 is an equidigital number, since it uses as much as digits as its factorization.

445560649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966970.

The product of its (nonzero) digits is 518400, while the sum is 43.

The square root of 445560649 is about 21108.3075825609. The cubic root of 445560649 is about 763.7811619098.

The spelling of 445560649 in words is "four hundred forty-five million, five hundred sixty thousand, six hundred forty-nine".