6897752947 has 4 divisors (see below), whose sum is σ = 7044513696. Its totient is φ = 6750992200.

The previous prime is 6897752909. The next prime is 6897752959. The reversal of 6897752947 is 7492577986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6897752947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6897752987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73380304 + ... + 73380397.

It is an arithmetic number, because the mean of its divisors is an integer number (1761128424).

Almost surely, 2^6897752947 is an apocalyptic number.

6897752947 is a deficient number, since it is larger than the sum of its proper divisors (146760749).

6897752947 is a wasteful number, since it uses less digits than its factorization.

6897752947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146760748.

The product of its digits is 53343360, while the sum is 64.

The square root of 6897752947 is about 83052.7118581928. The cubic root of 6897752947 is about 1903.5715781412.

The spelling of 6897752947 in words is "six billion, eight hundred ninety-seven million, seven hundred fifty-two thousand, nine hundred forty-seven".