868447 has 4 divisors (see below), whose sum is σ = 879520. Its totient is φ = 857376.

The previous prime is 868423. The next prime is 868451. The reversal of 868447 is 744868.

868447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 868447 - 2¹¹ = 866399 is a prime.

It is a d-powerful number, because it can be written as 8 + 6⁵ + 4⁴ + 8⁵ + 4⁶ + 7⁷ .

It is a Duffinian number.

868447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868487) 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, 5418 + ... + 5575.

It is an arithmetic number, because the mean of its divisors is an integer number (219880).

2⁸⁶⁸⁴⁴⁷ is an apocalyptic number.

868447 is a deficient number, since it is larger than the sum of its proper divisors (11073).

868447 is a wasteful number, since it uses less digits than its factorization.

868447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11072.

The product of its digits is 43008, while the sum is 37.

The square root of 868447 is about 931.9050380806. The cubic root of 868447 is about 95.4071903363.

The spelling of 868447 in words is "eight hundred sixty-eight thousand, four hundred forty-seven".