11872643 has 2 divisors, whose sum is σ = 11872644. Its totient is φ = 11872642.

The previous prime is 11872603. The next prime is 11872649. The reversal of 11872643 is 34627811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11872643 - 2⁸ = 11872387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11872649) 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 as a sum of consecutive naturals, namely, 5936321 + 5936322.

It is an arithmetic number, because the mean of its divisors is an integer number (5936322).

Almost surely, 2^11872643 is an apocalyptic number.

11872643 is a deficient number, since it is larger than the sum of its proper divisors (1).

11872643 is an equidigital number, since it uses as much as digits as its factorization.

11872643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 11872643 is about 3445.6701815467. The cubic root of 11872643 is about 228.1300363684.

The spelling of 11872643 in words is "eleven million, eight hundred seventy-two thousand, six hundred forty-three".