605666143 has 4 divisors (see below), whose sum is σ = 607917960. Its totient is φ = 603414328.

The previous prime is 605666099. The next prime is 605666167. The reversal of 605666143 is 341666506.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 605666143 - 2²⁵ = 572111711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605366143) 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 3 ways as a sum of consecutive naturals, for example, 1125505 + ... + 1126042.

It is an arithmetic number, because the mean of its divisors is an integer number (151979490).

Almost surely, 2^605666143 is an apocalyptic number.

605666143 is a deficient number, since it is larger than the sum of its proper divisors (2251817).

605666143 is a wasteful number, since it uses less digits than its factorization.

605666143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251816.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 605666143 is about 24610.2853091954. The cubic root of 605666143 is about 846.0793569034.

The spelling of 605666143 in words is "six hundred five million, six hundred sixty-six thousand, one hundred forty-three".