6689423353 has 2 divisors, whose sum is σ = 6689423354. Its totient is φ = 6689423352.

The previous prime is 6689423317. The next prime is 6689423393. The reversal of 6689423353 is 3533249866.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6076514304 + 612909049 = 77952^2 + 24757^2 .

It is a cyclic number.

It is not a de Polignac number, because 6689423353 - 2²¹ = 6687326201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6689423297 and 6689423306.

It is not a weakly prime, because it can be changed into another prime (6689423393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3344711676 + 3344711677.

It is an arithmetic number, because the mean of its divisors is an integer number (3344711677).

Almost surely, 2^6689423353 is an apocalyptic number.

It is an amenable number.

6689423353 is a deficient number, since it is larger than the sum of its proper divisors (1).

6689423353 is an equidigital number, since it uses as much as digits as its factorization.

6689423353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 49.

The square root of 6689423353 is about 81788.8950469439. The cubic root of 6689423353 is about 1884.2111118897.

The spelling of 6689423353 in words is "six billion, six hundred eighty-nine million, four hundred twenty-three thousand, three hundred fifty-three".