6944547647 has 2 divisors, whose sum is σ = 6944547648. Its totient is φ = 6944547646.

The previous prime is 6944547641. The next prime is 6944547661. The reversal of 6944547647 is 7467454496.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6944547647 - 2⁸ = 6944547391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6944547592 and 6944547601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6944547641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3472273823 + 3472273824.

It is an arithmetic number, because the mean of its divisors is an integer number (3472273824).

Almost surely, 2^6944547647 is an apocalyptic number.

6944547647 is a deficient number, since it is larger than the sum of its proper divisors (1).

6944547647 is an equidigital number, since it uses as much as digits as its factorization.

6944547647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 56.

The square root of 6944547647 is about 83333.9525463661. The cubic root of 6944547647 is about 1907.8665218702.

The spelling of 6944547647 in words is "six billion, nine hundred forty-four million, five hundred forty-seven thousand, six hundred forty-seven".