6520343 has 2 divisors, whose sum is σ = 6520344. Its totient is φ = 6520342.

The previous prime is 6520321. The next prime is 6520379. The reversal of 6520343 is 3430256.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6520343 - 2⁶ = 6520279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6520313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260171 + 3260172.

It is an arithmetic number, because the mean of its divisors is an integer number (3260172).

Almost surely, 2^6520343 is an apocalyptic number.

6520343 is a deficient number, since it is larger than the sum of its proper divisors (1).

6520343 is an equidigital number, since it uses as much as digits as its factorization.

6520343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 6520343 is about 2553.4962306610. The cubic root of 6520343 is about 186.8200486073.

Adding to 6520343 its reverse (3430256), we get a palindrome (9950599).

The spelling of 6520343 in words is "six million, five hundred twenty thousand, three hundred forty-three".