655397269 has 2 divisors, whose sum is σ = 655397270. Its totient is φ = 655397268.

The previous prime is 655397261. The next prime is 655397279. The reversal of 655397269 is 962793556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 536478244 + 118919025 = 23162^2 + 10905^2 .

It is a cyclic number.

It is not a de Polignac number, because 655397269 - 2³ = 655397261 is a prime.

It is a super-2 number, since 2×655397269² = 859091160425316722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655397261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327698634 + 327698635.

It is an arithmetic number, because the mean of its divisors is an integer number (327698635).

Almost surely, 2^655397269 is an apocalyptic number.

It is an amenable number.

655397269 is a deficient number, since it is larger than the sum of its proper divisors (1).

655397269 is an equidigital number, since it uses as much as digits as its factorization.

655397269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3061800, while the sum is 52.

The square root of 655397269 is about 25600.7278998078. The cubic root of 655397269 is about 868.6301024329.

The spelling of 655397269 in words is "six hundred fifty-five million, three hundred ninety-seven thousand, two hundred sixty-nine".