6485639 has 4 divisors (see below), whose sum is σ = 6491520. Its totient is φ = 6479760.

The previous prime is 6485629. The next prime is 6485657. The reversal of 6485639 is 9365846.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6485639 - 2¹² = 6481543 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6⁶ + 4¹¹ + 8⁵ + 5³ + 6⁸ + 3¹² + 9³ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6485596 and 6485605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6485629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734 + ... + 3675.

It is an arithmetic number, because the mean of its divisors is an integer number (1622880).

Almost surely, 2^6485639 is an apocalyptic number.

6485639 is a deficient number, since it is larger than the sum of its proper divisors (5881).

6485639 is a wasteful number, since it uses less digits than its factorization.

6485639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5880.

The product of its digits is 155520, while the sum is 41.

The square root of 6485639 is about 2546.6917756179. The cubic root of 6485639 is about 186.4880139498.

The spelling of 6485639 in words is "six million, four hundred eighty-five thousand, six hundred thirty-nine".