47866 has 16 divisors (see below), whose sum is σ = 88704. Its totient is φ = 18864.

The previous prime is 47857. The next prime is 47869. The reversal of 47866 is 66874.

It is not an unprimeable number, because it can be changed into a prime (47869) 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 7 ways as a sum of consecutive naturals, for example, 51 + ... + 313.

It is an arithmetic number, because the mean of its divisors is an integer number (5544).

2⁴⁷⁸⁶⁶ is an apocalyptic number.

47866 is a deficient number, since it is larger than the sum of its proper divisors (40838).

47866 is a wasteful number, since it uses less digits than its factorization.

47866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285.

The product of its digits is 8064, while the sum is 31.

The square root of 47866 is about 218.7829975112. The cubic root of 47866 is about 36.3085617044.

The spelling of 47866 in words is "forty-seven thousand, eight hundred sixty-six".