5406649 has 2 divisors, whose sum is σ = 5406650. Its totient is φ = 5406648.

The previous prime is 5406647. The next prime is 5406671. The reversal of 5406649 is 9466045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5405625 + 1024 = 2325^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 5406649 - 2¹ = 5406647 is a prime.

Together with 5406647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5406641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2703324 + 2703325.

It is an arithmetic number, because the mean of its divisors is an integer number (2703325).

Almost surely, 2^5406649 is an apocalyptic number.

It is an amenable number.

5406649 is a deficient number, since it is larger than the sum of its proper divisors (1).

5406649 is an equidigital number, since it uses as much as digits as its factorization.

5406649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 5406649 is about 2325.2202046258. The cubic root of 5406649 is about 175.5130414034.

The spelling of 5406649 in words is "five million, four hundred six thousand, six hundred forty-nine".