147866 has 8 divisors (see below), whose sum is σ = 234900. Its totient is φ = 69568.

The previous prime is 147863. The next prime is 147881. The reversal of 147866 is 668741.

147866 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 143641 + 4225 = 379^2 + 65^2 .

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

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 147866.

It is not an unprimeable number, because it can be changed into a prime (147863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2141 + ... + 2208.

2¹⁴⁷⁸⁶⁶ is an apocalyptic number.

147866 is a deficient number, since it is larger than the sum of its proper divisors (87034).

147866 is a wasteful number, since it uses less digits than its factorization.

147866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368.

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

The square root of 147866 is about 384.5334835876. The cubic root of 147866 is about 52.8797558815.

The spelling of 147866 in words is "one hundred forty-seven thousand, eight hundred sixty-six".