6839661 has 16 divisors (see below), whose sum is σ = 9894528. Its totient is φ = 4185600.

The previous prime is 6839659. The next prime is 6839663. The reversal of 6839661 is 1669386.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6839659) and next prime (6839663).

It is not a de Polignac number, because 6839661 - 2¹ = 6839659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6839663) 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 15 ways as a sum of consecutive naturals, for example, 456 + ... + 3726.

It is an arithmetic number, because the mean of its divisors is an integer number (618408).

Almost surely, 2^6839661 is an apocalyptic number.

It is an amenable number.

6839661 is a deficient number, since it is larger than the sum of its proper divisors (3054867).

6839661 is a wasteful number, since it uses less digits than its factorization.

6839661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332.

The product of its digits is 46656, while the sum is 39.

The square root of 6839661 is about 2615.2745553765. The cubic root of 6839661 is about 189.8212631209.

The spelling of 6839661 in words is "six million, eight hundred thirty-nine thousand, six hundred sixty-one".