6861568 has 54 divisors (see below), whose sum is σ = 15961596. Its totient is φ = 2935296.

The previous prime is 6861559. The next prime is 6861581. The reversal of 6861568 is 8651686.

It is a happy number.

6861568 is nontrivially palindromic in base 3.

It is a super-2 number, since 2×6861568² = 94162230837248, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 6861568.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12271 + ... + 12817.

Almost surely, 2^6861568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6861568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7980798).

6861568 is an abundant number, since it is smaller than the sum of its proper divisors (9100028).

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

6861568 is an equidigital number, since it uses as much as digits as its factorization.

6861568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 556 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 6861568 is about 2619.4594862299. The cubic root of 6861568 is about 190.0237089527.

The spelling of 6861568 in words is "six million, eight hundred sixty-one thousand, five hundred sixty-eight".