6502681 has 2 divisors, whose sum is σ = 6502682. Its totient is φ = 6502680.

The previous prime is 6502679. The next prime is 6502697. The reversal of 6502681 is 1862056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5953600 + 549081 = 2440^2 + 741^2 .

It is a cyclic number.

It is not a de Polignac number, because 6502681 - 2¹ = 6502679 is a prime.

It is a super-2 number, since 2×6502681² = 84569720375522, which contains 22 as substring.

Together with 6502679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6502631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3251340 + 3251341.

It is an arithmetic number, because the mean of its divisors is an integer number (3251341).

Almost surely, 2^6502681 is an apocalyptic number.

It is an amenable number.

6502681 is a deficient number, since it is larger than the sum of its proper divisors (1).

6502681 is an equidigital number, since it uses as much as digits as its factorization.

6502681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 6502681 is about 2550.0354899491. The cubic root of 6502681 is about 186.6512129355.

The spelling of 6502681 in words is "six million, five hundred two thousand, six hundred eighty-one".