3966543 has 32 divisors (see below), whose sum is σ = 6942720. Its totient is φ = 2190240.

The previous prime is 3966541. The next prime is 3966563. The reversal of 3966543 is 3456693.

It is not a de Polignac number, because 3966543 - 2¹ = 3966541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3966498 and 3966507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3966541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5521 + ... + 6197.

It is an arithmetic number, because the mean of its divisors is an integer number (216960).

Almost surely, 2^3966543 is an apocalyptic number.

3966543 is a deficient number, since it is larger than the sum of its proper divisors (2976177).

3966543 is a wasteful number, since it uses less digits than its factorization.

3966543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 718 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 3966543 is about 1991.6181862998. The cubic root of 3966543 is about 158.2962848374.

The spelling of 3966543 in words is "three million, nine hundred sixty-six thousand, five hundred forty-three".