6856616 has 16 divisors (see below), whose sum is σ = 13845300. Its totient is φ = 3164544.

The previous prime is 6856613. The next prime is 6856621. The reversal of 6856616 is 6166586.

It can be written as a sum of positive squares in 2 ways, for example, as 6300100 + 556516 = 2510^2 + 746^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6856616.

It is not an unprimeable number, because it can be changed into a prime (6856613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32861 + ... + 33068.

Almost surely, 2^6856616 is an apocalyptic number.

It is an amenable number.

6856616 is an abundant number, since it is smaller than the sum of its proper divisors (6988684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6856616 is a wasteful number, since it uses less digits than its factorization.

6856616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65948 (or 65944 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 6856616 is about 2618.5140824521. The cubic root of 6856616 is about 189.9779845221.

The spelling of 6856616 in words is "six million, eight hundred fifty-six thousand, six hundred sixteen".