6945143 has 4 divisors (see below), whose sum is σ = 7092960. Its totient is φ = 6797328.

The previous prime is 6945139. The next prime is 6945161. The reversal of 6945143 is 3415496.

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

It is not a de Polignac number, because 6945143 - 2² = 6945139 is a prime.

It is a super-2 number, since 2×6945143² = 96470022580898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6945193) 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, 73838 + ... + 73931.

It is an arithmetic number, because the mean of its divisors is an integer number (1773240).

Almost surely, 2^6945143 is an apocalyptic number.

6945143 is a deficient number, since it is larger than the sum of its proper divisors (147817).

6945143 is a wasteful number, since it uses less digits than its factorization.

6945143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147816.

The product of its digits is 12960, while the sum is 32.

The square root of 6945143 is about 2635.3639217383. The cubic root of 6945143 is about 190.7921040497.

The spelling of 6945143 in words is "six million, nine hundred forty-five thousand, one hundred forty-three".