5778649 has 2 divisors, whose sum is σ = 5778650. Its totient is φ = 5778648.

The previous prime is 5778631. The next prime is 5778653. The reversal of 5778649 is 9468775.

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., 3115225 + 2663424 = 1765^2 + 1632^2 .

It is a cyclic number.

It is not a de Polignac number, because 5778649 - 2⁹ = 5778137 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 5778599 and 5778608.

It is not a weakly prime, because it can be changed into another prime (5778629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2889324 + 2889325.

It is an arithmetic number, because the mean of its divisors is an integer number (2889325).

Almost surely, 2^5778649 is an apocalyptic number.

It is an amenable number.

5778649 is a deficient number, since it is larger than the sum of its proper divisors (1).

5778649 is an equidigital number, since it uses as much as digits as its factorization.

5778649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 46.

The square root of 5778649 is about 2403.8820686548. The cubic root of 5778649 is about 179.4494391313.

The spelling of 5778649 in words is "five million, seven hundred seventy-eight thousand, six hundred forty-nine".