643062600623 has 2 divisors, whose sum is σ = 643062600624. Its totient is φ = 643062600622.

The previous prime is 643062600571. The next prime is 643062600647. The reversal of 643062600623 is 326006260346.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 643062600623 - 2²⁰ = 643061552047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (643062660623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321531300311 + 321531300312.

It is an arithmetic number, because the mean of its divisors is an integer number (321531300312).

Almost surely, 2^643062600623 is an apocalyptic number.

643062600623 is a deficient number, since it is larger than the sum of its proper divisors (1).

643062600623 is an equidigital number, since it uses as much as digits as its factorization.

643062600623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 38.

Adding to 643062600623 its reverse (326006260346), we get a palindrome (969068860969).

The spelling of 643062600623 in words is "six hundred forty-three billion, sixty-two million, six hundred thousand, six hundred twenty-three".