861411 has 4 divisors (see below), whose sum is σ = 1148552. Its totient is φ = 574272.

The previous prime is 861391. The next prime is 861433. The reversal of 861411 is 114168.

861411 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 not a de Polignac number, because 861411 - 2⁶ = 861347 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861491) 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, 143566 + ... + 143571.

It is an arithmetic number, because the mean of its divisors is an integer number (287138).

2⁸⁶¹⁴¹¹ is an apocalyptic number.

861411 is a deficient number, since it is larger than the sum of its proper divisors (287141).

861411 is a wasteful number, since it uses less digits than its factorization.

861411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287140.

The product of its digits is 192, while the sum is 21.

The square root of 861411 is about 928.1222979759. The cubic root of 861411 is about 95.1488341089.

Adding to 861411 its reverse (114168), we get a palindrome (975579).

The spelling of 861411 in words is "eight hundred sixty-one thousand, four hundred eleven".