2785873 has 2 divisors, whose sum is σ = 2785874. Its totient is φ = 2785872.

The previous prime is 2785859. The next prime is 2785879. The reversal of 2785873 is 3785872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1926544 + 859329 = 1388^2 + 927^2 .

It is a cyclic number.

It is not a de Polignac number, because 2785873 - 2¹⁷ = 2654801 is a prime.

It is a super-2 number, since 2×2785873² = 15522176744258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2785879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392936 + 1392937.

It is an arithmetic number, because the mean of its divisors is an integer number (1392937).

2^2785873 is an apocalyptic number.

It is an amenable number.

2785873 is a deficient number, since it is larger than the sum of its proper divisors (1).

2785873 is an equidigital number, since it uses as much as digits as its factorization.

2785873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 2785873 is about 1669.0934665261. The cubic root of 2785873 is about 140.7085339414.

Subtracting 2785873 from its reverse (3785872), we obtain a palindrome (999999).

The spelling of 2785873 in words is "two million, seven hundred eighty-five thousand, eight hundred seventy-three".