656803853 has 2 divisors, whose sum is σ = 656803854. Its totient is φ = 656803852.

The previous prime is 656803813. The next prime is 656803877. The reversal of 656803853 is 358308656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656486884 + 316969 = 25622^2 + 563^2 .

It is a cyclic number.

It is not a de Polignac number, because 656803853 - 2⁸ = 656803597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656803813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328401926 + 328401927.

It is an arithmetic number, because the mean of its divisors is an integer number (328401927).

Almost surely, 2^656803853 is an apocalyptic number.

It is an amenable number.

656803853 is a deficient number, since it is larger than the sum of its proper divisors (1).

656803853 is an equidigital number, since it uses as much as digits as its factorization.

656803853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 656803853 is about 25628.1847386817. The cubic root of 656803853 is about 869.2510633087.

The spelling of 656803853 in words is "six hundred fifty-six million, eight hundred three thousand, eight hundred fifty-three".