6859649 has 8 divisors (see below), whose sum is σ = 7173120. Its totient is φ = 6552000.

The previous prime is 6859621. The next prime is 6859667. The reversal of 6859649 is 9469586.

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

It is a cyclic number.

It is not a de Polignac number, because 6859649 - 2¹⁶ = 6794113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6859609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049 + ... + 3849.

It is an arithmetic number, because the mean of its divisors is an integer number (896640).

Almost surely, 2^6859649 is an apocalyptic number.

It is an amenable number.

6859649 is a deficient number, since it is larger than the sum of its proper divisors (313471).

6859649 is a wasteful number, since it uses less digits than its factorization.

6859649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911.

The product of its digits is 466560, while the sum is 47.

The square root of 6859649 is about 2619.0931636733. The cubic root of 6859649 is about 190.0059924241.

The spelling of 6859649 in words is "six million, eight hundred fifty-nine thousand, six hundred forty-nine".