6465143 has 4 divisors (see below), whose sum is σ = 6673728. Its totient is φ = 6256560.

The previous prime is 6465133. The next prime is 6465163. The reversal of 6465143 is 3415646.

It is a happy number.

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 6465143 - 2⁴ = 6465127 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 (6465133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104246 + ... + 104307.

It is an arithmetic number, because the mean of its divisors is an integer number (1668432).

Almost surely, 2^6465143 is an apocalyptic number.

6465143 is a deficient number, since it is larger than the sum of its proper divisors (208585).

6465143 is a wasteful number, since it uses less digits than its factorization.

6465143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208584.

The product of its digits is 8640, while the sum is 29.

The square root of 6465143 is about 2542.6645472811. The cubic root of 6465143 is about 186.2913593719.

The spelling of 6465143 in words is "six million, four hundred sixty-five thousand, one hundred forty-three".