6489785 has 8 divisors (see below), whose sum is σ = 7868616. Its totient is φ = 5137920.

The previous prime is 6489781. The next prime is 6489793. The reversal of 6489785 is 5879846.

6489785 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 43264 + 6446521 = 208^2 + 2539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6489785 - 2² = 6489781 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 (6489781) 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 7 ways as a sum of consecutive naturals, for example, 6206 + ... + 7175.

It is an arithmetic number, because the mean of its divisors is an integer number (983577).

Almost surely, 2^6489785 is an apocalyptic number.

It is an amenable number.

6489785 is a deficient number, since it is larger than the sum of its proper divisors (1378831).

6489785 is a wasteful number, since it uses less digits than its factorization.

6489785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13483.

The product of its digits is 483840, while the sum is 47.

The square root of 6489785 is about 2547.5056427808. The cubic root of 6489785 is about 186.5277435026.

The spelling of 6489785 in words is "six million, four hundred eighty-nine thousand, seven hundred eighty-five".