656653453 has 2 divisors, whose sum is σ = 656653454. Its totient is φ = 656653452.

The previous prime is 656653429. The next prime is 656653457. The reversal of 656653453 is 354356656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 635695369 + 20958084 = 25213^2 + 4578^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-656653453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656653457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328326726 + 328326727.

It is an arithmetic number, because the mean of its divisors is an integer number (328326727).

Almost surely, 2^656653453 is an apocalyptic number.

It is an amenable number.

656653453 is a deficient number, since it is larger than the sum of its proper divisors (1).

656653453 is an equidigital number, since it uses as much as digits as its factorization.

656653453 is an evil number, because the sum of its binary digits is even.

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

The square root of 656653453 is about 25625.2503012166. The cubic root of 656653453 is about 869.1847089780.

The spelling of 656653453 in words is "six hundred fifty-six million, six hundred fifty-three thousand, four hundred fifty-three".