6397578 has 48 divisors (see below), whose sum is σ = 15350400. Its totient is φ = 1909440.

The previous prime is 6397571. The next prime is 6397579. The reversal of 6397578 is 8757936.

It is a happy number.

6397578 is a `hidden beast` number, since 639 + 7 + 5 + 7 + 8 = 666.

Its product of digits (317520) is a multiple of the sum of its prime divisors (504).

It is not an unprimeable number, because it can be changed into a prime (6397571) 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 in 23 ways as a sum of consecutive naturals, for example, 15438 + ... + 15846.

It is an arithmetic number, because the mean of its divisors is an integer number (319800).

Almost surely, 2^6397578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6397578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7675200).

6397578 is an abundant number, since it is smaller than the sum of its proper divisors (8952822).

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

6397578 is a wasteful number, since it uses less digits than its factorization.

6397578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 504 counting only the distinct ones).

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

The square root of 6397578 is about 2529.3433930568. The cubic root of 6397578 is about 185.6401297058.

The spelling of 6397578 in words is "six million, three hundred ninety-seven thousand, five hundred seventy-eight".