3568729 has 2 divisors, whose sum is σ = 3568730. Its totient is φ = 3568728.

The previous prime is 3568717. The next prime is 3568753. The reversal of 3568729 is 9278653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2647129 + 921600 = 1627^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 3568729 - 2⁹ = 3568217 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3568691 and 3568700.

It is not a weakly prime, because it can be changed into another prime (3568709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1784364 + 1784365.

It is an arithmetic number, because the mean of its divisors is an integer number (1784365).

Almost surely, 2^3568729 is an apocalyptic number.

It is an amenable number.

3568729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3568729 is an equidigital number, since it uses as much as digits as its factorization.

3568729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 3568729 is about 1889.1079905606. The cubic root of 3568729 is about 152.8168312234.

The spelling of 3568729 in words is "three million, five hundred sixty-eight thousand, seven hundred twenty-nine".