6406375 has 16 divisors (see below), whose sum is σ = 8154432. Its totient is φ = 5023200.

The previous prime is 6406369. The next prime is 6406381. The reversal of 6406375 is 5736046.

It is an interprime number because it is at equal distance from previous prime (6406369) and next prime (6406381).

It is not a de Polignac number, because 6406375 - 2⁵ = 6406343 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 6142 + ... + 7108.

It is an arithmetic number, because the mean of its divisors is an integer number (509652).

Almost surely, 2^6406375 is an apocalyptic number.

6406375 is a deficient number, since it is larger than the sum of its proper divisors (1748057).

6406375 is an equidigital number, since it uses as much as digits as its factorization.

6406375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 6406375 is about 2531.0817845340. The cubic root of 6406375 is about 185.7251789891.

The spelling of 6406375 in words is "six million, four hundred six thousand, three hundred seventy-five".