6786457 has 2 divisors, whose sum is σ = 6786458. Its totient is φ = 6786456.

The previous prime is 6786413. The next prime is 6786467. The reversal of 6786457 is 7546876.

6786457 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4044121 + 2742336 = 2011^2 + 1656^2 .

It is a cyclic number.

It is not a de Polignac number, because 6786457 - 2¹¹ = 6784409 is a prime.

It is a super-2 number, since 2×6786457² = 92111997225698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6786407) 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, 3393228 + 3393229.

It is an arithmetic number, because the mean of its divisors is an integer number (3393229).

Almost surely, 2^6786457 is an apocalyptic number.

It is an amenable number.

6786457 is a deficient number, since it is larger than the sum of its proper divisors (1).

6786457 is an equidigital number, since it uses as much as digits as its factorization.

6786457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 43.

The square root of 6786457 is about 2605.0829161468. The cubic root of 6786457 is about 189.3277907715.

The spelling of 6786457 in words is "six million, seven hundred eighty-six thousand, four hundred fifty-seven".