866041 has 8 divisors (see below), whose sum is σ = 953568. Its totient is φ = 780000.

The previous prime is 866029. The next prime is 866051. The reversal of 866041 is 140668.

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

It is a cyclic number.

It is not a de Polignac number, because 866041 - 2⁵ = 866009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 865997 and 866015.

It is not an unprimeable number, because it can be changed into a prime (866011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141 + ... + 1741.

It is an arithmetic number, because the mean of its divisors is an integer number (119196).

2⁸⁶⁶⁰⁴¹ is an apocalyptic number.

It is an amenable number.

866041 is a deficient number, since it is larger than the sum of its proper divisors (87527).

866041 is a wasteful number, since it uses less digits than its factorization.

866041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 866041 is about 930.6132386765. The cubic root of 866041 is about 95.3190014915.

It can be divided in two parts, 8 and 66041, that added together give a square (66049 = 257²).

The spelling of 866041 in words is "eight hundred sixty-six thousand, forty-one".