6869743655 has 4 divisors (see below), whose sum is σ = 8243692392. Its totient is φ = 5495794920.

The previous prime is 6869743649. The next prime is 6869743669. The reversal of 6869743655 is 5563479686.

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

It is not a de Polignac number, because 6869743655 - 2⁶ = 6869743591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6869743594 and 6869743603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686974361 + ... + 686974370.

It is an arithmetic number, because the mean of its divisors is an integer number (2060923098).

Almost surely, 2^6869743655 is an apocalyptic number.

6869743655 is a deficient number, since it is larger than the sum of its proper divisors (1373948737).

6869743655 is a wasteful number, since it uses less digits than its factorization.

6869743655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373948736.

The product of its digits is 32659200, while the sum is 59.

The square root of 6869743655 is about 82883.9167450477. The cubic root of 6869743655 is about 1900.9915097325.

The spelling of 6869743655 in words is "six billion, eight hundred sixty-nine million, seven hundred forty-three thousand, six hundred fifty-five".