5646869 has 2 divisors, whose sum is σ = 5646870. Its totient is φ = 5646868.

The previous prime is 5646859. The next prime is 5646877. The reversal of 5646869 is 9686465.

5646869 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5466244 + 180625 = 2338^2 + 425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5646869 is a prime.

It is a super-2 number, since 2×5646869² = 63774259006322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5646859) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2823434 + 2823435.

It is an arithmetic number, because the mean of its divisors is an integer number (2823435).

Almost surely, 2^5646869 is an apocalyptic number.

It is an amenable number.

5646869 is a deficient number, since it is larger than the sum of its proper divisors (1).

5646869 is an equidigital number, since it uses as much as digits as its factorization.

5646869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 44.

The square root of 5646869 is about 2376.3141627319. The cubic root of 5646869 is about 178.0748433317.

The spelling of 5646869 in words is "five million, six hundred forty-six thousand, eight hundred sixty-nine".