6869513971 has 4 divisors (see below), whose sum is σ = 6871458600. Its totient is φ = 6867569344.

The previous prime is 6869513957. The next prime is 6869513999. The reversal of 6869513971 is 1793159686.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1793159686 = 2 ⋅896579843.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6869513971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6869513171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 967006 + ... + 974083.

It is an arithmetic number, because the mean of its divisors is an integer number (1717864650).

Almost surely, 2^6869513971 is an apocalyptic number.

6869513971 is a deficient number, since it is larger than the sum of its proper divisors (1944629).

6869513971 is a wasteful number, since it uses less digits than its factorization.

6869513971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944628.

The product of its digits is 2449440, while the sum is 55.

The square root of 6869513971 is about 82882.5311570538. The cubic root of 6869513971 is about 1900.9703234883.

The spelling of 6869513971 in words is "six billion, eight hundred sixty-nine million, five hundred thirteen thousand, nine hundred seventy-one".