5647729 has 2 divisors, whose sum is σ = 5647730. Its totient is φ = 5647728.

The previous prime is 5647699. The next prime is 5647771. The reversal of 5647729 is 9277465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4524129 + 1123600 = 2127^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 5647729 - 2⁷ = 5647601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5647691 and 5647700.

It is not a weakly prime, because it can be changed into another prime (5647129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2823864 + 2823865.

It is an arithmetic number, because the mean of its divisors is an integer number (2823865).

Almost surely, 2^5647729 is an apocalyptic number.

It is an amenable number.

5647729 is a deficient number, since it is larger than the sum of its proper divisors (1).

5647729 is an equidigital number, since it uses as much as digits as its factorization.

5647729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 5647729 is about 2376.4951083476. The cubic root of 5647729 is about 178.0838829483.

The spelling of 5647729 in words is "five million, six hundred forty-seven thousand, seven hundred twenty-nine".