6445875 has 16 divisors (see below), whose sum is σ = 10726560. Its totient is φ = 3437600.

The previous prime is 6445871. The next prime is 6445919. The reversal of 6445875 is 5785446.

6445875 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6445875 - 2² = 6445871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6445871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8220 + ... + 8969.

It is an arithmetic number, because the mean of its divisors is an integer number (670410).

Almost surely, 2^6445875 is an apocalyptic number.

6445875 is a deficient number, since it is larger than the sum of its proper divisors (4280685).

6445875 is a wasteful number, since it uses less digits than its factorization.

6445875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17207 (or 17197 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 6445875 is about 2538.8727813737. The cubic root of 6445875 is about 186.1061078001.

The spelling of 6445875 in words is "six million, four hundred forty-five thousand, eight hundred seventy-five".