6655547 has 2 divisors, whose sum is σ = 6655548. Its totient is φ = 6655546.

The previous prime is 6655543. The next prime is 6655549. The reversal of 6655547 is 7455566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6655547 - 2² = 6655543 is a prime.

Together with 6655549, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6655547.

It is not a weakly prime, because it can be changed into another prime (6655541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3327773 + 3327774.

It is an arithmetic number, because the mean of its divisors is an integer number (3327774).

Almost surely, 2^6655547 is an apocalyptic number.

6655547 is a deficient number, since it is larger than the sum of its proper divisors (1).

6655547 is an equidigital number, since it uses as much as digits as its factorization.

6655547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126000, while the sum is 38.

The square root of 6655547 is about 2579.8346846261. The cubic root of 6655547 is about 188.1025074745.

It can be divided in two parts, 665554 and 7, that multiplied together give a triangular number (4658878 = T₃₀₅₂).

The spelling of 6655547 in words is "six million, six hundred fifty-five thousand, five hundred forty-seven".