6880891 has 2 divisors, whose sum is σ = 6880892. Its totient is φ = 6880890.

The previous prime is 6880879. The next prime is 6880931. The reversal of 6880891 is 1980886.

It is a happy number.

It is an a-pointer prime, because the next prime (6880931) can be obtained adding 6880891 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6880891 - 2¹¹ = 6878843 is a prime.

It is a Chen prime.

6880891 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6880871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3440445 + 3440446.

It is an arithmetic number, because the mean of its divisors is an integer number (3440446).

Almost surely, 2^6880891 is an apocalyptic number.

6880891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6880891 is an equidigital number, since it uses as much as digits as its factorization.

6880891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 6880891 is about 2623.1452495049. The cubic root of 6880891 is about 190.2019183038.

The spelling of 6880891 in words is "six million, eight hundred eighty thousand, eight hundred ninety-one".