2785582817 has 2 divisors, whose sum is σ = 2785582818. Its totient is φ = 2785582816.

The previous prime is 2785582771. The next prime is 2785582823. The reversal of 2785582817 is 7182855872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2730689536 + 54893281 = 52256^2 + 7409^2 .

It is a cyclic number.

It is not a de Polignac number, because 2785582817 - 2¹⁸ = 2785320673 is a prime.

It is not a weakly prime, because it can be changed into another prime (2785582847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392791408 + 1392791409.

It is an arithmetic number, because the mean of its divisors is an integer number (1392791409).

Almost surely, 2^2785582817 is an apocalyptic number.

It is an amenable number.

2785582817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2785582817 is an equidigital number, since it uses as much as digits as its factorization.

2785582817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2508800, while the sum is 53.

The square root of 2785582817 is about 52778.6208326819. The cubic root of 2785582817 is about 1407.0364826259.

The spelling of 2785582817 in words is "two billion, seven hundred eighty-five million, five hundred eighty-two thousand, eight hundred seventeen".