6477857 has 2 divisors, whose sum is σ = 6477858. Its totient is φ = 6477856.

The previous prime is 6477847. The next prime is 6477859. The reversal of 6477857 is 7587746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6345361 + 132496 = 2519^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 6477857 - 2¹⁶ = 6412321 is a prime.

Together with 6477859, 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 (6477859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3238928 + 3238929.

It is an arithmetic number, because the mean of its divisors is an integer number (3238929).

Almost surely, 2^6477857 is an apocalyptic number.

It is an amenable number.

6477857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6477857 is an equidigital number, since it uses as much as digits as its factorization.

6477857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329280, while the sum is 44.

The square root of 6477857 is about 2545.1634525114. The cubic root of 6477857 is about 186.4133962417.

The spelling of 6477857 in words is "six million, four hundred seventy-seven thousand, eight hundred fifty-seven".