655579297 has 2 divisors, whose sum is σ = 655579298. Its totient is φ = 655579296.

The previous prime is 655579277. The next prime is 655579303. The reversal of 655579297 is 792975556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 461562256 + 194017041 = 21484^2 + 13929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655579297 is a prime.

It is not a weakly prime, because it can be changed into another prime (655579237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327789648 + 327789649.

It is an arithmetic number, because the mean of its divisors is an integer number (327789649).

Almost surely, 2^655579297 is an apocalyptic number.

It is an amenable number.

655579297 is a deficient number, since it is larger than the sum of its proper divisors (1).

655579297 is an equidigital number, since it uses as much as digits as its factorization.

655579297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5953500, while the sum is 55.

The square root of 655579297 is about 25604.2827862840. The cubic root of 655579297 is about 868.7105118638.

The spelling of 655579297 in words is "six hundred fifty-five million, five hundred seventy-nine thousand, two hundred ninety-seven".