6397875 has 72 divisors (see below), whose sum is σ = 12946752. Its totient is φ = 3036000.

The previous prime is 6397871. The next prime is 6397891. The reversal of 6397875 is 5787936.

It is a happy number.

6397875 is a `hidden beast` number, since 639 + 7 + 8 + 7 + 5 = 666.

It is not a de Polignac number, because 6397875 - 2² = 6397871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a d-powerful number, because it can be written as 6⁶ + 3⁹ + 9⁶ + 7⁴ + 8⁵ + 7⁸ + 5³ .

Its product of digits (317520) is a multiple of the sum of its prime factors (90).

It is a self number, because there is not a number n which added to its sum of digits gives 6397875.

It is not an unprimeable number, because it can be changed into a prime (6397871) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 136102 + ... + 136148.

It is an arithmetic number, because the mean of its divisors is an integer number (179816).

Almost surely, 2^6397875 is an apocalyptic number.

6397875 is an abundant number, since it is smaller than the sum of its proper divisors (6548877).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6397875 is a wasteful number, since it uses less digits than its factorization.

6397875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 66 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 6397875 is about 2529.4021032647. The cubic root of 6397875 is about 185.6430023693.

The spelling of 6397875 in words is "six million, three hundred ninety-seven thousand, eight hundred seventy-five".