6969647 has 2 divisors, whose sum is σ = 6969648. Its totient is φ = 6969646.

The previous prime is 6969629. The next prime is 6969661. The reversal of 6969647 is 7469696.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6969647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6969607) 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, 3484823 + 3484824.

It is an arithmetic number, because the mean of its divisors is an integer number (3484824).

Almost surely, 2^6969647 is an apocalyptic number.

6969647 is a deficient number, since it is larger than the sum of its proper divisors (1).

6969647 is an equidigital number, since it uses as much as digits as its factorization.

6969647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 47.

The square root of 6969647 is about 2640.0089015001. The cubic root of 6969647 is about 191.0162262468.

Subtracting from 6969647 its sum of digits (47), we obtain a square (6969600 = 2640²).

The spelling of 6969647 in words is "six million, nine hundred sixty-nine thousand, six hundred forty-seven".