44785665 has 12 divisors (see below), whose sum is σ = 77628564. Its totient is φ = 23885664.

The previous prime is 44785649. The next prime is 44785673. The reversal of 44785665 is 56658744.

It can be written as a sum of positive squares in 2 ways, for example, as 14447601 + 30338064 = 3801^2 + 5508^2 .

It is not a de Polignac number, because 44785665 - 2⁴ = 44785649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 995237 = 44785665 / (4 + 4 + 7 + 8 + 5 + 6 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 44785665.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 497574 + ... + 497663.

It is an arithmetic number, because the mean of its divisors is an integer number (6469047).

It is a Proth number, since it is equal to 5467 ⋅ 2¹³ + 1 and 5467 < 2¹³.

Almost surely, 2^44785665 is an apocalyptic number.

44785665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

44785665 is a deficient number, since it is larger than the sum of its proper divisors (32842899).

44785665 is a wasteful number, since it uses less digits than its factorization.

44785665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995248 (or 995245 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 44785665 is about 6692.2092764647. The cubic root of 44785665 is about 355.1237153944.

The spelling of 44785665 in words is "forty-four million, seven hundred eighty-five thousand, six hundred sixty-five".