2785320673 has 2 divisors, whose sum is σ = 2785320674. Its totient is φ = 2785320672.

The previous prime is 2785320661. The next prime is 2785320683. The reversal of 2785320673 is 3760235872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1551414544 + 1233906129 = 39388^2 + 35127^2 .

It is a cyclic number.

It is not a de Polignac number, because 2785320673 - 2²⁹ = 2248449761 is a prime.

It is a super-2 number, since 2×2785320673² = 15516022502882345858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2785320683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392660336 + 1392660337.

It is an arithmetic number, because the mean of its divisors is an integer number (1392660337).

Almost surely, 2^2785320673 is an apocalyptic number.

It is an amenable number.

2785320673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2785320673 is an equidigital number, since it uses as much as digits as its factorization.

2785320673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 2785320673 is about 52776.1373444476. The cubic root of 2785320673 is about 1406.9923437189.

The spelling of 2785320673 in words is "two billion, seven hundred eighty-five million, three hundred twenty thousand, six hundred seventy-three".