2785859 has 2 divisors, whose sum is σ = 2785860. Its totient is φ = 2785858.

The previous prime is 2785847. The next prime is 2785873. The reversal of 2785859 is 9585872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2785859 - 2⁴ = 2785843 is a prime.

It is a super-2 number, since 2×2785859² = 15522020735762, which contains 22 as substring.

It is a Chen prime.

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, 1392929 + 1392930.

It is an arithmetic number, because the mean of its divisors is an integer number (1392930).

2^2785859 is an apocalyptic number.

2785859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2785859 is an equidigital number, since it uses as much as digits as its factorization.

2785859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 44.

The square root of 2785859 is about 1669.0892726274. The cubic root of 2785859 is about 140.7082982376.

The spelling of 2785859 in words is "two million, seven hundred eighty-five thousand, eight hundred fifty-nine".