7966143 has 6 divisors (see below), whose sum is σ = 11506664. Its totient is φ = 5310756.

The previous prime is 7966141. The next prime is 7966157. The reversal of 7966143 is 3416697.

It is not a de Polignac number, because 7966143 - 2¹ = 7966141 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7966098 and 7966107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7966141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 442555 + ... + 442572.

Almost surely, 2^7966143 is an apocalyptic number.

7966143 is a deficient number, since it is larger than the sum of its proper divisors (3540521).

7966143 is a wasteful number, since it uses less digits than its factorization.

7966143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885133 (or 885130 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 7966143 is about 2822.4356502851. The cubic root of 7966143 is about 199.7174593753.

The spelling of 7966143 in words is "seven million, nine hundred sixty-six thousand, one hundred forty-three".