6556607 has 2 divisors, whose sum is σ = 6556608. Its totient is φ = 6556606.

The previous prime is 6556603. The next prime is 6556609. The reversal of 6556607 is 7066556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6556607 - 2² = 6556603 is a prime.

Together with 6556609, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6556601) 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, 3278303 + 3278304.

It is an arithmetic number, because the mean of its divisors is an integer number (3278304).

Almost surely, 2^6556607 is an apocalyptic number.

6556607 is a deficient number, since it is larger than the sum of its proper divisors (1).

6556607 is an equidigital number, since it uses as much as digits as its factorization.

6556607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 6556607 is about 2560.5872373344. The cubic root of 6556607 is about 187.1657523580.

The spelling of 6556607 in words is "six million, five hundred fifty-six thousand, six hundred seven".