655466393 has 2 divisors, whose sum is σ = 655466394. Its totient is φ = 655466392.

The previous prime is 655466333. The next prime is 655466419. The reversal of 655466393 is 393664556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459802249 + 195664144 = 21443^2 + 13988^2 .

It is a cyclic number.

It is not a de Polignac number, because 655466393 - 2²⁶ = 588357529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (655466333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327733196 + 327733197.

It is an arithmetic number, because the mean of its divisors is an integer number (327733197).

Almost surely, 2^655466393 is an apocalyptic number.

It is an amenable number.

655466393 is a deficient number, since it is larger than the sum of its proper divisors (1).

655466393 is an equidigital number, since it uses as much as digits as its factorization.

655466393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1749600, while the sum is 47.

The square root of 655466393 is about 25602.0779039515. The cubic root of 655466393 is about 868.6606391670.

The spelling of 655466393 in words is "six hundred fifty-five million, four hundred sixty-six thousand, three hundred ninety-three".