6580891 has 2 divisors, whose sum is σ = 6580892. Its totient is φ = 6580890.

The previous prime is 6580843. The next prime is 6580901. The reversal of 6580891 is 1980856.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6580891 is a prime.

6580891 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6580891.

It is not a weakly prime, because it can be changed into another prime (6580841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3290445 + 3290446.

It is an arithmetic number, because the mean of its divisors is an integer number (3290446).

Almost surely, 2^6580891 is an apocalyptic number.

6580891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6580891 is an equidigital number, since it uses as much as digits as its factorization.

6580891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 6580891 is about 2565.3247357791. The cubic root of 6580891 is about 187.3965390698.

The spelling of 6580891 in words is "six million, five hundred eighty thousand, eight hundred ninety-one".