7143643 has 4 divisors (see below), whose sum is σ = 7693168. Its totient is φ = 6594120.

The previous prime is 7143637. The next prime is 7143667. The reversal of 7143643 is 3463417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3463417 = 127 ⋅27271.

It is not a de Polignac number, because 7143643 - 2¹⁷ = 7012571 is a prime.

It is a super-2 number, since 2×7143643² = 102063270622898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7143613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274743 + ... + 274768.

It is an arithmetic number, because the mean of its divisors is an integer number (1923292).

Almost surely, 2^7143643 is an apocalyptic number.

7143643 is a deficient number, since it is larger than the sum of its proper divisors (549525).

7143643 is a wasteful number, since it uses less digits than its factorization.

7143643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549524.

The product of its digits is 6048, while the sum is 28.

The square root of 7143643 is about 2672.7594354898. The cubic root of 7143643 is about 192.5927410552.

The spelling of 7143643 in words is "seven million, one hundred forty-three thousand, six hundred forty-three".