6945559 has 2 divisors, whose sum is σ = 6945560. Its totient is φ = 6945558.

The previous prime is 6945557. The next prime is 6945577. The reversal of 6945559 is 9555496.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6945559 - 2¹ = 6945557 is a prime.

Together with 6945557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6945551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3472779 + 3472780.

It is an arithmetic number, because the mean of its divisors is an integer number (3472780).

Almost surely, 2^6945559 is an apocalyptic number.

6945559 is a deficient number, since it is larger than the sum of its proper divisors (1).

6945559 is an equidigital number, since it uses as much as digits as its factorization.

6945559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243000, while the sum is 43.

The square root of 6945559 is about 2635.4428470373. The cubic root of 6945559 is about 190.7959133272.

The spelling of 6945559 in words is "six million, nine hundred forty-five thousand, five hundred fifty-nine".