656543453 has 2 divisors, whose sum is σ = 656543454. Its totient is φ = 656543452.

The previous prime is 656543449. The next prime is 656543467. The reversal of 656543453 is 354345656.

656543453 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 can be written as a sum of positive squares in only one way, i.e., 379587289 + 276956164 = 19483^2 + 16642^2 .

It is a cyclic number.

It is not a de Polignac number, because 656543453 - 2² = 656543449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 656543453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656543413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328271726 + 328271727.

It is an arithmetic number, because the mean of its divisors is an integer number (328271727).

Almost surely, 2^656543453 is an apocalyptic number.

It is an amenable number.

656543453 is a deficient number, since it is larger than the sum of its proper divisors (1).

656543453 is an equidigital number, since it uses as much as digits as its factorization.

656543453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 41.

The square root of 656543453 is about 25623.1038908248. The cubic root of 656543453 is about 869.1361721347.

The spelling of 656543453 in words is "six hundred fifty-six million, five hundred forty-three thousand, four hundred fifty-three".