6505973 has 2 divisors, whose sum is σ = 6505974. Its totient is φ = 6505972.

The previous prime is 6505949. The next prime is 6505991. The reversal of 6505973 is 3795056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6340324 + 165649 = 2518^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 6505973 - 2⁸ = 6505717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6502973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3252986 + 3252987.

It is an arithmetic number, because the mean of its divisors is an integer number (3252987).

Almost surely, 2^6505973 is an apocalyptic number.

It is an amenable number.

6505973 is a deficient number, since it is larger than the sum of its proper divisors (1).

6505973 is an equidigital number, since it uses as much as digits as its factorization.

6505973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 6505973 is about 2550.6808894881. The cubic root of 6505973 is about 186.6827051837.

The spelling of 6505973 in words is "six million, five hundred five thousand, nine hundred seventy-three".