655236943 has 8 divisors (see below), whose sum is σ = 663683328. Its totient is φ = 646803864.

The previous prime is 655236937. The next prime is 655236997. The reversal of 655236943 is 349632556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655236943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 655236943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655237943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128896 + ... + 133882.

It is an arithmetic number, because the mean of its divisors is an integer number (82960416).

Almost surely, 2^655236943 is an apocalyptic number.

655236943 is a deficient number, since it is larger than the sum of its proper divisors (8446385).

655236943 is a wasteful number, since it uses less digits than its factorization.

655236943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653.

The product of its digits is 583200, while the sum is 43.

The square root of 655236943 is about 25597.5964301338. The cubic root of 655236943 is about 868.5592673563.

The spelling of 655236943 in words is "six hundred fifty-five million, two hundred thirty-six thousand, nine hundred forty-three".