6403387 has 2 divisors, whose sum is σ = 6403388. Its totient is φ = 6403386.

The previous prime is 6403381. The next prime is 6403393. The reversal of 6403387 is 7833046.

It is a balanced prime because it is at equal distance from previous prime (6403381) and next prime (6403393).

It is a cyclic number.

It is not a de Polignac number, because 6403387 - 2³ = 6403379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6403381) 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, 3201693 + 3201694.

It is an arithmetic number, because the mean of its divisors is an integer number (3201694).

Almost surely, 2^6403387 is an apocalyptic number.

6403387 is a deficient number, since it is larger than the sum of its proper divisors (1).

6403387 is an equidigital number, since it uses as much as digits as its factorization.

6403387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 6403387 is about 2530.4914542436. The cubic root of 6403387 is about 185.6962997797.

The spelling of 6403387 in words is "six million, four hundred three thousand, three hundred eighty-seven".