6981569 has 12 divisors (see below), whose sum is σ = 8550000. Its totient is φ = 5668488.

The previous prime is 6981563. The next prime is 6981593. The reversal of 6981569 is 9651896.

6981569 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6981569 - 2⁸ = 6981313 is a prime.

It is a super-2 number, since 2×6981569² = 97484611403522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6981563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2819 + ... + 4680.

It is an arithmetic number, because the mean of its divisors is an integer number (712500).

Almost surely, 2^6981569 is an apocalyptic number.

It is an amenable number.

6981569 is a deficient number, since it is larger than the sum of its proper divisors (1568431).

6981569 is a wasteful number, since it uses less digits than its factorization.

6981569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7532 (or 7525 counting only the distinct ones).

The product of its digits is 116640, while the sum is 44.

The square root of 6981569 is about 2642.2658836688. The cubic root of 6981569 is about 191.1250791150.

The spelling of 6981569 in words is "six million, nine hundred eighty-one thousand, five hundred sixty-nine".