6378591 has 16 divisors (see below), whose sum is σ = 8875008. Its totient is φ = 4070400.

The previous prime is 6378563. The next prime is 6378607. The reversal of 6378591 is 1958736.

It is not a de Polignac number, because 6378591 - 2⁹ = 6378079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6378551) 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, 9631 + ... + 10271.

It is an arithmetic number, because the mean of its divisors is an integer number (554688).

Almost surely, 2^6378591 is an apocalyptic number.

6378591 is a deficient number, since it is larger than the sum of its proper divisors (2496417).

6378591 is a wasteful number, since it uses less digits than its factorization.

6378591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782.

The product of its digits is 45360, while the sum is 39.

The square root of 6378591 is about 2525.5872584411. The cubic root of 6378591 is about 185.4562975395.

The spelling of 6378591 in words is "six million, three hundred seventy-eight thousand, five hundred ninety-one".