5646449 has 2 divisors, whose sum is σ = 5646450. Its totient is φ = 5646448.

The previous prime is 5646419. The next prime is 5646451. The reversal of 5646449 is 9446465.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5017600 + 628849 = 2240^2 + 793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5646449 is a prime.

Together with 5646451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5646409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2823224 + 2823225.

It is an arithmetic number, because the mean of its divisors is an integer number (2823225).

Almost surely, 2^5646449 is an apocalyptic number.

It is an amenable number.

5646449 is a deficient number, since it is larger than the sum of its proper divisors (1).

5646449 is an equidigital number, since it uses as much as digits as its factorization.

5646449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The square root of 5646449 is about 2376.2257889350. The cubic root of 5646449 is about 178.0704283017.

The spelling of 5646449 in words is "five million, six hundred forty-six thousand, four hundred forty-nine".