6489895 has 4 divisors (see below), whose sum is σ = 7787880. Its totient is φ = 5191912.

The previous prime is 6489893. The next prime is 6489913. The reversal of 6489895 is 5989846.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5989846 = 2 ⋅2994923.

It is a cyclic number.

It is not a de Polignac number, because 6489895 - 2¹ = 6489893 is a prime.

It is a super-2 number, since 2×6489895² = 84237474222050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6489893) 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 3 ways as a sum of consecutive naturals, for example, 648985 + ... + 648994.

It is an arithmetic number, because the mean of its divisors is an integer number (1946970).

Almost surely, 2^6489895 is an apocalyptic number.

6489895 is a deficient number, since it is larger than the sum of its proper divisors (1297985).

6489895 is a wasteful number, since it uses less digits than its factorization.

6489895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297984.

The product of its digits is 622080, while the sum is 49.

The square root of 6489895 is about 2547.5272324354. The cubic root of 6489895 is about 186.5287973606.

Subtracting from 6489895 its sum of digits (49), we obtain a palindrome (6489846).

The spelling of 6489895 in words is "six million, four hundred eighty-nine thousand, eight hundred ninety-five".