6554689 has 2 divisors, whose sum is σ = 6554690. Its totient is φ = 6554688.

The previous prime is 6554687. The next prime is 6554699. The reversal of 6554689 is 9864556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6553600 + 1089 = 2560^2 + 33^2 .

It is a cyclic number.

It is not a de Polignac number, because 6554689 - 2¹ = 6554687 is a prime.

Together with 6554687, it forms a pair of twin primes.

6554689 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6554683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277344 + 3277345.

It is an arithmetic number, because the mean of its divisors is an integer number (3277345).

Almost surely, 2^6554689 is an apocalyptic number.

It is an amenable number.

6554689 is a deficient number, since it is larger than the sum of its proper divisors (1).

6554689 is an equidigital number, since it uses as much as digits as its factorization.

6554689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 43.

The square root of 6554689 is about 2560.2126864774. The cubic root of 6554689 is about 187.1475000860.

The spelling of 6554689 in words is "six million, five hundred fifty-four thousand, six hundred eighty-nine".