6497580409 has 2 divisors, whose sum is σ = 6497580410. Its totient is φ = 6497580408.

The previous prime is 6497580359. The next prime is 6497580433. The reversal of 6497580409 is 9040857946.

It is a happy number.

6497580409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6393601600 + 103978809 = 79960^2 + 10197^2 .

It is a cyclic number.

It is not a de Polignac number, because 6497580409 - 2¹⁷ = 6497449337 is a prime.

It is not a weakly prime, because it can be changed into another prime (6497580449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3248790204 + 3248790205.

It is an arithmetic number, because the mean of its divisors is an integer number (3248790205).

Almost surely, 2^6497580409 is an apocalyptic number.

It is an amenable number.

6497580409 is a deficient number, since it is larger than the sum of its proper divisors (1).

6497580409 is an equidigital number, since it uses as much as digits as its factorization.

6497580409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 6497580409 is about 80607.5704199054. The cubic root of 6497580409 is about 1866.0239817103.

The spelling of 6497580409 in words is "six billion, four hundred ninety-seven million, five hundred eighty thousand, four hundred nine".