6469649 has 2 divisors, whose sum is σ = 6469650. Its totient is φ = 6469648.

The previous prime is 6469637. The next prime is 6469667. The reversal of 6469649 is 9469646.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5914624 + 555025 = 2432^2 + 745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6469649 is a prime.

It is not a weakly prime, because it can be changed into another prime (6469699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3234824 + 3234825.

It is an arithmetic number, because the mean of its divisors is an integer number (3234825).

Almost surely, 2^6469649 is an apocalyptic number.

It is an amenable number.

6469649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6469649 is an equidigital number, since it uses as much as digits as its factorization.

6469649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 44.

The square root of 6469649 is about 2543.5504712901. The cubic root of 6469649 is about 186.3346290475.

The spelling of 6469649 in words is "six million, four hundred sixty-nine thousand, six hundred forty-nine".