665103143 has 4 divisors (see below), whose sum is σ = 668777928. Its totient is φ = 661428360.

The previous prime is 665103097. The next prime is 665103149. The reversal of 665103143 is 341301566.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665103143 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 (665103149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1837121 + ... + 1837482.

It is an arithmetic number, because the mean of its divisors is an integer number (167194482).

Almost surely, 2^665103143 is an apocalyptic number.

665103143 is a deficient number, since it is larger than the sum of its proper divisors (3674785).

665103143 is a wasteful number, since it uses less digits than its factorization.

665103143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674784.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 665103143 is about 25789.5936959077. The cubic root of 665103143 is about 872.8969982838.

The spelling of 665103143 in words is "six hundred sixty-five million, one hundred three thousand, one hundred forty-three".