655494673 has 2 divisors, whose sum is σ = 655494674. Its totient is φ = 655494672.

The previous prime is 655494647. The next prime is 655494683. The reversal of 655494673 is 376494556.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648822784 + 6671889 = 25472^2 + 2583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655494673 is a prime.

It is not a weakly prime, because it can be changed into another prime (655494613) 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, 327747336 + 327747337.

It is an arithmetic number, because the mean of its divisors is an integer number (327747337).

Almost surely, 2^655494673 is an apocalyptic number.

It is an amenable number.

655494673 is a deficient number, since it is larger than the sum of its proper divisors (1).

655494673 is an equidigital number, since it uses as much as digits as its factorization.

655494673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 49.

The square root of 655494673 is about 25602.6301969153. The cubic root of 655494673 is about 868.6731317320.

The spelling of 655494673 in words is "six hundred fifty-five million, four hundred ninety-four thousand, six hundred seventy-three".