7775440705 has 16 divisors (see below), whose sum is σ = 10220055120. Its totient is φ = 5652570112.

The previous prime is 7775440703. The next prime is 7775440711. The reversal of 7775440705 is 5070445777.

It can be written as a sum of positive squares in 8 ways, for example, as 32672656 + 7742768049 = 5716^2 + 87993^2 .

It is a cyclic number.

It is not a de Polignac number, because 7775440705 - 2¹ = 7775440703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7775440703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1574704 + ... + 1579633.

It is an arithmetic number, because the mean of its divisors is an integer number (638753445).

Almost surely, 2^7775440705 is an apocalyptic number.

It is an amenable number.

7775440705 is a deficient number, since it is larger than the sum of its proper divisors (2444614415).

7775440705 is a wasteful number, since it uses less digits than its factorization.

7775440705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154388.

The product of its (nonzero) digits is 960400, while the sum is 46.

The square root of 7775440705 is about 88178.4594161182. The cubic root of 7775440705 is about 1981.1088494479.

The spelling of 7775440705 in words is "seven billion, seven hundred seventy-five million, four hundred forty thousand, seven hundred five".