655943 has 2 divisors, whose sum is σ = 655944. Its totient is φ = 655942.

The previous prime is 655927. The next prime is 655961. The reversal of 655943 is 349556.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655943 - 2⁴ = 655927 is a prime.

It is a super-2 number, since 2×655943² = 860522438498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327971 + 327972.

It is an arithmetic number, because the mean of its divisors is an integer number (327972).

2⁶⁵⁵⁹⁴³ is an apocalyptic number.

655943 is a deficient number, since it is larger than the sum of its proper divisors (1).

655943 is an equidigital number, since it uses as much as digits as its factorization.

655943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 32.

The square root of 655943 is about 809.9030806214. The cubic root of 655943 is about 86.8871130221.

The spelling of 655943 in words is "six hundred fifty-five thousand, nine hundred forty-three".