5649649 has 2 divisors, whose sum is σ = 5649650. Its totient is φ = 5649648.

The previous prime is 5649647. The next prime is 5649667. The reversal of 5649649 is 9469465.

It is a happy number.

5649649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5489649 + 160000 = 2343^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 5649649 - 2¹ = 5649647 is a prime.

Together with 5649647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5649647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2824824 + 2824825.

It is an arithmetic number, because the mean of its divisors is an integer number (2824825).

Almost surely, 2^5649649 is an apocalyptic number.

It is an amenable number.

5649649 is a deficient number, since it is larger than the sum of its proper divisors (1).

5649649 is an equidigital number, since it uses as much as digits as its factorization.

5649649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 43.

The square root of 5649649 is about 2376.8990302493. The cubic root of 5649649 is about 178.1040611070.

The spelling of 5649649 in words is "five million, six hundred forty-nine thousand, six hundred forty-nine".