3866543 has 2 divisors, whose sum is σ = 3866544. Its totient is φ = 3866542.

The previous prime is 3866479. The next prime is 3866581. The reversal of 3866543 is 3456683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3866543 - 2⁶ = 3866479 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 3⁸ + 8⁷ + 6⁵ + 6⁸ + 5 + 4⁷ + 3¹⁰ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3866143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933271 + 1933272.

It is an arithmetic number, because the mean of its divisors is an integer number (1933272).

Almost surely, 2^3866543 is an apocalyptic number.

3866543 is a deficient number, since it is larger than the sum of its proper divisors (1).

3866543 is an equidigital number, since it uses as much as digits as its factorization.

3866543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 3866543 is about 1966.3527150539. The cubic root of 3866543 is about 156.9546842047.

The spelling of 3866543 in words is "three million, eight hundred sixty-six thousand, five hundred forty-three".