6485657 has 2 divisors, whose sum is σ = 6485658. Its totient is φ = 6485656.

The previous prime is 6485629. The next prime is 6485659. The reversal of 6485657 is 7565846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4999696 + 1485961 = 2236^2 + 1219^2 .

It is a cyclic number.

It is not a de Polignac number, because 6485657 - 2²² = 2291353 is a prime.

Together with 6485659, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6485659) 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, 3242828 + 3242829.

It is an arithmetic number, because the mean of its divisors is an integer number (3242829).

Almost surely, 2^6485657 is an apocalyptic number.

It is an amenable number.

6485657 is a deficient number, since it is larger than the sum of its proper divisors (1).

6485657 is an equidigital number, since it uses as much as digits as its factorization.

6485657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 41.

The square root of 6485657 is about 2546.6953096120. The cubic root of 6485657 is about 186.4881864736.

The spelling of 6485657 in words is "six million, four hundred eighty-five thousand, six hundred fifty-seven".