5685397009 has 2 divisors, whose sum is σ = 5685397010. Its totient is φ = 5685397008.

The previous prime is 5685397007. The next prime is 5685397013. The reversal of 5685397009 is 9007935865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4861993984 + 823403025 = 69728^2 + 28695^2 .

It is a cyclic number.

It is not a de Polignac number, because 5685397009 - 2¹ = 5685397007 is a prime.

It is a super-2 number, since 2×5685397009² = 64647478299892292162, which contains 22 as substring.

Together with 5685397007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5685397007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2842698504 + 2842698505.

It is an arithmetic number, because the mean of its divisors is an integer number (2842698505).

Almost surely, 2^5685397009 is an apocalyptic number.

It is an amenable number.

5685397009 is a deficient number, since it is larger than the sum of its proper divisors (1).

5685397009 is an equidigital number, since it uses as much as digits as its factorization.

5685397009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The square root of 5685397009 is about 75401.5716613387. The cubic root of 5685397009 is about 1784.7892120067.

The spelling of 5685397009 in words is "five billion, six hundred eighty-five million, three hundred ninety-seven thousand, nine".