6344865623 has 2 divisors, whose sum is σ = 6344865624. Its totient is φ = 6344865622.

The previous prime is 6344865557. The next prime is 6344865679. The reversal of 6344865623 is 3265684436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6344865623 - 2⁸ = 6344865367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6344865223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3172432811 + 3172432812.

It is an arithmetic number, because the mean of its divisors is an integer number (3172432812).

Almost surely, 2^6344865623 is an apocalyptic number.

6344865623 is a deficient number, since it is larger than the sum of its proper divisors (1).

6344865623 is an equidigital number, since it uses as much as digits as its factorization.

6344865623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 47.

The square root of 6344865623 is about 79654.6647912098. The cubic root of 6344865623 is about 1851.2886685328.

The spelling of 6344865623 in words is "six billion, three hundred forty-four million, eight hundred sixty-five thousand, six hundred twenty-three".