655794289 has 2 divisors, whose sum is σ = 655794290. Its totient is φ = 655794288.

The previous prime is 655794277. The next prime is 655794299. The reversal of 655794289 is 982497556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 641102400 + 14691889 = 25320^2 + 3833^2 .

It is a cyclic number.

It is not a de Polignac number, because 655794289 - 2¹⁵ = 655761521 is a prime.

It is a super-2 number, since 2×655794289² = 860132298970031042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (655794299) 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, 327897144 + 327897145.

It is an arithmetic number, because the mean of its divisors is an integer number (327897145).

Almost surely, 2^655794289 is an apocalyptic number.

It is an amenable number.

655794289 is a deficient number, since it is larger than the sum of its proper divisors (1).

655794289 is an equidigital number, since it uses as much as digits as its factorization.

655794289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 55.

The square root of 655794289 is about 25608.4808022655. The cubic root of 655794289 is about 868.8054637122.

The spelling of 655794289 in words is "six hundred fifty-five million, seven hundred ninety-four thousand, two hundred eighty-nine".