655636543 has 2 divisors, whose sum is σ = 655636544. Its totient is φ = 655636542.

The previous prime is 655636537. The next prime is 655636561. The reversal of 655636543 is 345636556.

655636543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655636543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655636543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655636573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327818271 + 327818272.

It is an arithmetic number, because the mean of its divisors is an integer number (327818272).

Almost surely, 2^655636543 is an apocalyptic number.

655636543 is a deficient number, since it is larger than the sum of its proper divisors (1).

655636543 is an equidigital number, since it uses as much as digits as its factorization.

655636543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972000, while the sum is 43.

The square root of 655636543 is about 25605.4006607981. The cubic root of 655636543 is about 868.7357967555.

The spelling of 655636543 in words is "six hundred fifty-five million, six hundred thirty-six thousand, five hundred forty-three".