866741 has 4 divisors (see below), whose sum is σ = 869184. Its totient is φ = 864300.

The previous prime is 866737. The next prime is 866743. The reversal of 866741 is 147668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 866741 - 2² = 866737 is a prime.

It is a super-2 number, since 2×866741² = 1502479922162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 866698 and 866707.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 866741.

It is not an unprimeable number, because it can be changed into a prime (866743) 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, 575 + ... + 1436.

It is an arithmetic number, because the mean of its divisors is an integer number (217296).

2⁸⁶⁶⁷⁴¹ is an apocalyptic number.

It is an amenable number.

866741 is a deficient number, since it is larger than the sum of its proper divisors (2443).

866741 is a wasteful number, since it uses less digits than its factorization.

866741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442.

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

The square root of 866741 is about 930.9892587995. The cubic root of 866741 is about 95.3446759234.

The spelling of 866741 in words is "eight hundred sixty-six thousand, seven hundred forty-one".