6499985 has 8 divisors (see below), whose sum is σ = 7814016. Its totient is φ = 5190640.

The previous prime is 6499949. The next prime is 6499991. The reversal of 6499985 is 5899946.

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

It is not a de Polignac number, because 6499985 - 2¹² = 6495889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 3842 + ... + 5268.

It is an arithmetic number, because the mean of its divisors is an integer number (976752).

Almost surely, 2^6499985 is an apocalyptic number.

It is an amenable number.

6499985 is a deficient number, since it is larger than the sum of its proper divisors (1314031).

6499985 is a wasteful number, since it uses less digits than its factorization.

6499985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343.

The product of its digits is 699840, while the sum is 50.

The square root of 6499985 is about 2549.5068150527. The cubic root of 6499985 is about 186.6254142826.

The spelling of 6499985 in words is "six million, four hundred ninety-nine thousand, nine hundred eighty-five".