947866 has 8 divisors (see below), whose sum is σ = 1460340. Its totient is φ = 461088.

The previous prime is 947861. The next prime is 947873. The reversal of 947866 is 668749.

It can be written as a sum of positive squares in 2 ways, for example, as 931225 + 16641 = 965^2 + 129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (947861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6331 + ... + 6478.

2⁹⁴⁷⁸⁶⁶ is an apocalyptic number.

947866 is a deficient number, since it is larger than the sum of its proper divisors (512474).

947866 is a wasteful number, since it uses less digits than its factorization.

947866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12848.

The product of its digits is 72576, while the sum is 40.

The square root of 947866 is about 973.5841001167. The cubic root of 947866 is about 98.2310942220.

The spelling of 947866 in words is "nine hundred forty-seven thousand, eight hundred sixty-six".