6395887 has 4 divisors (see below), whose sum is σ = 6491416. Its totient is φ = 6300360.

The previous prime is 6395869. The next prime is 6395891. The reversal of 6395887 is 7885936.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6395887 - 2¹⁹ = 5871599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6395867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47664 + ... + 47797.

It is an arithmetic number, because the mean of its divisors is an integer number (1622854).

Almost surely, 2^6395887 is an apocalyptic number.

6395887 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

6395887 is a deficient number, since it is larger than the sum of its proper divisors (95529).

6395887 is an equidigital number, since it uses as much as digits as its factorization.

6395887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95528.

The product of its digits is 362880, while the sum is 46.

The square root of 6395887 is about 2529.0090944874. The cubic root of 6395887 is about 185.6237722071.

Subtracting from 6395887 its sum of digits (46), we obtain a square (6395841 = 2529²).

The spelling of 6395887 in words is "six million, three hundred ninety-five thousand, eight hundred eighty-seven".