2785961 has 2 divisors, whose sum is σ = 2785962. Its totient is φ = 2785960.

The previous prime is 2785907. The next prime is 2785963. The reversal of 2785961 is 1695872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2785561 + 400 = 1669^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 2785961 - 2¹⁰ = 2784937 is a prime.

Together with 2785963, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2785963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392980 + 1392981.

It is an arithmetic number, because the mean of its divisors is an integer number (1392981).

2^2785961 is an apocalyptic number.

It is an amenable number.

2785961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2785961 is an equidigital number, since it uses as much as digits as its factorization.

2785961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 2785961 is about 1669.1198279333. The cubic root of 2785961 is about 140.7100154903.

The spelling of 2785961 in words is "two million, seven hundred eighty-five thousand, nine hundred sixty-one".