6404375 has 10 divisors (see below), whose sum is σ = 8003688. Its totient is φ = 5123000.

The previous prime is 6404369. The next prime is 6404381. The reversal of 6404375 is 5734046.

It is an interprime number because it is at equal distance from previous prime (6404369) and next prime (6404381).

It is not a de Polignac number, because 6404375 - 2¹⁰ = 6403351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4499 + ... + 5748.

Almost surely, 2^6404375 is an apocalyptic number.

6404375 is a deficient number, since it is larger than the sum of its proper divisors (1599313).

6404375 is an equidigital number, since it uses as much as digits as its factorization.

6404375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10267 (or 10252 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 6404375 is about 2530.6866657095. The cubic root of 6404375 is about 185.7058498563.

The spelling of 6404375 in words is "six million, four hundred four thousand, three hundred seventy-five".