655289 has 2 divisors, whose sum is σ = 655290. Its totient is φ = 655288.

The previous prime is 655283. The next prime is 655301. The reversal of 655289 is 982556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 570025 + 85264 = 755^2 + 292^2 .

It is a cyclic number.

It is not a de Polignac number, because 655289 - 2⁴ = 655273 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655289.

It is not a weakly prime, because it can be changed into another prime (655283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327644 + 327645.

It is an arithmetic number, because the mean of its divisors is an integer number (327645).

2⁶⁵⁵²⁸⁹ is an apocalyptic number.

It is an amenable number.

655289 is a deficient number, since it is larger than the sum of its proper divisors (1).

655289 is an equidigital number, since it uses as much as digits as its factorization.

655289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 655289 is about 809.4992279181. The cubic root of 655289 is about 86.8582268396.

The spelling of 655289 in words is "six hundred fifty-five thousand, two hundred eighty-nine".