655918279 has 2 divisors, whose sum is σ = 655918280. Its totient is φ = 655918278.

The previous prime is 655918273. The next prime is 655918313. The reversal of 655918279 is 972819556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655918279 - 2³ = 655918271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655918271) 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, 327959139 + 327959140.

It is an arithmetic number, because the mean of its divisors is an integer number (327959140).

Almost surely, 2^655918279 is an apocalyptic number.

655918279 is a deficient number, since it is larger than the sum of its proper divisors (1).

655918279 is an equidigital number, since it uses as much as digits as its factorization.

655918279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 52.

The square root of 655918279 is about 25610.9015655443. The cubic root of 655918279 is about 868.8602148249.

The spelling of 655918279 in words is "six hundred fifty-five million, nine hundred eighteen thousand, two hundred seventy-nine".