5665789 has 2 divisors, whose sum is σ = 5665790. Its totient is φ = 5665788.

The previous prime is 5665787. The next prime is 5665837. The reversal of 5665789 is 9875665.

5665789 = T₁₉₄₂ + T₁₉₄₃ + T₁₉₄₄.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5560164 + 105625 = 2358^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 5665789 - 2¹ = 5665787 is a prime.

Together with 5665787, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5665783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2832894 + 2832895.

It is an arithmetic number, because the mean of its divisors is an integer number (2832895).

Almost surely, 2^5665789 is an apocalyptic number.

5665789 is the 1944-th centered triangular number.

It is an amenable number.

5665789 is a deficient number, since it is larger than the sum of its proper divisors (1).

5665789 is an equidigital number, since it uses as much as digits as its factorization.

5665789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 46.

The square root of 5665789 is about 2380.2917888360. The cubic root of 5665789 is about 178.2735032843.

The spelling of 5665789 in words is "five million, six hundred sixty-five thousand, seven hundred eighty-nine".