6481789 has 2 divisors, whose sum is σ = 6481790. Its totient is φ = 6481788.

The previous prime is 6481763. The next prime is 6481807. The reversal of 6481789 is 9871846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4549689 + 1932100 = 2133^2 + 1390^2 .

It is a cyclic number.

It is not a de Polignac number, because 6481789 - 2⁵ = 6481757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6481729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3240894 + 3240895.

It is an arithmetic number, because the mean of its divisors is an integer number (3240895).

Almost surely, 2^6481789 is an apocalyptic number.

It is an amenable number.

6481789 is a deficient number, since it is larger than the sum of its proper divisors (1).

6481789 is an equidigital number, since it uses as much as digits as its factorization.

6481789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 6481789 is about 2545.9357808083. The cubic root of 6481789 is about 186.4511056889.

The spelling of 6481789 in words is "six million, four hundred eighty-one thousand, seven hundred eighty-nine".