6406507 has 2 divisors, whose sum is σ = 6406508. Its totient is φ = 6406506.

The previous prime is 6406493. The next prime is 6406529. The reversal of 6406507 is 7056046.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6406507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6406577) 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, 3203253 + 3203254.

It is an arithmetic number, because the mean of its divisors is an integer number (3203254).

Almost surely, 2^6406507 is an apocalyptic number.

6406507 is a deficient number, since it is larger than the sum of its proper divisors (1).

6406507 is an equidigital number, since it uses as much as digits as its factorization.

6406507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 6406507 is about 2531.1078602067. The cubic root of 6406507 is about 185.7264545703.

The spelling of 6406507 in words is "six million, four hundred six thousand, five hundred seven".