6995143 has 4 divisors (see below), whose sum is σ = 7406640. Its totient is φ = 6583648.

The previous prime is 6995137. The next prime is 6995147. The reversal of 6995143 is 3415996.

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-6995143 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 (6995147) 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, 205723 + ... + 205756.

It is an arithmetic number, because the mean of its divisors is an integer number (1851660).

Almost surely, 2^6995143 is an apocalyptic number.

6995143 is a deficient number, since it is larger than the sum of its proper divisors (411497).

6995143 is a wasteful number, since it uses less digits than its factorization.

6995143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411496.

The product of its digits is 29160, while the sum is 37.

The square root of 6995143 is about 2644.8332650661. The cubic root of 6995143 is about 191.2488646749.

The spelling of 6995143 in words is "six million, nine hundred ninety-five thousand, one hundred forty-three".