6689423361 has 4 divisors (see below), whose sum is σ = 8919231152. Its totient is φ = 4459615572.

The previous prime is 6689423353. The next prime is 6689423393. The reversal of 6689423361 is 1633249866.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6689423361 - 2³ = 6689423353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6689423361.

It is not an unprimeable number, because it can be changed into a prime (6689423161) 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 3 ways as a sum of consecutive naturals, for example, 1114903891 + ... + 1114903896.

It is an arithmetic number, because the mean of its divisors is an integer number (2229807788).

Almost surely, 2^6689423361 is an apocalyptic number.

It is an amenable number.

6689423361 is a deficient number, since it is larger than the sum of its proper divisors (2229807791).

6689423361 is a wasteful number, since it uses less digits than its factorization.

6689423361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229807790.

The product of its digits is 1119744, while the sum is 48.

The square root of 6689423361 is about 81788.8950958503. The cubic root of 6689423361 is about 1884.2111126408.

The spelling of 6689423361 in words is "six billion, six hundred eighty-nine million, four hundred twenty-three thousand, three hundred sixty-one".