6655393 has 2 divisors, whose sum is σ = 6655394. Its totient is φ = 6655392.

The previous prime is 6655379. The next prime is 6655403. The reversal of 6655393 is 3935566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6436369 + 219024 = 2537^2 + 468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6655393 is a prime.

It is not a weakly prime, because it can be changed into another prime (6655333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3327696 + 3327697.

It is an arithmetic number, because the mean of its divisors is an integer number (3327697).

Almost surely, 2^6655393 is an apocalyptic number.

It is an amenable number.

6655393 is a deficient number, since it is larger than the sum of its proper divisors (1).

6655393 is an equidigital number, since it uses as much as digits as its factorization.

6655393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 37.

The square root of 6655393 is about 2579.8048375798. The cubic root of 6655393 is about 188.1010566541.

The spelling of 6655393 in words is "six million, six hundred fifty-five thousand, three hundred ninety-three".