6345623441 has 4 divisors (see below), whose sum is σ = 6345870132. Its totient is φ = 6345376752.

The previous prime is 6345623437. The next prime is 6345623443. The reversal of 6345623441 is 1443265436.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3832105216 + 2513518225 = 61904^2 + 50135^2 .

It is a cyclic number.

It is not a de Polignac number, because 6345623441 - 2² = 6345623437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6345623395 and 6345623404.

It is not an unprimeable number, because it can be changed into a prime (6345623443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79586 + ... + 137931.

It is an arithmetic number, because the mean of its divisors is an integer number (1586467533).

Almost surely, 2^6345623441 is an apocalyptic number.

It is an amenable number.

6345623441 is a deficient number, since it is larger than the sum of its proper divisors (246691).

6345623441 is a wasteful number, since it uses less digits than its factorization.

6345623441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246690.

The product of its digits is 207360, while the sum is 38.

The square root of 6345623441 is about 79659.4215457280. The cubic root of 6345623441 is about 1851.3623703314.

Adding to 6345623441 its reverse (1443265436), we get a palindrome (7788888877).

The spelling of 6345623441 in words is "six billion, three hundred forty-five million, six hundred twenty-three thousand, four hundred forty-one".