861485 has 4 divisors (see below), whose sum is σ = 1033788. Its totient is φ = 689184.

The previous prime is 861439. The next prime is 861491. The reversal of 861485 is 584168.

861485 is nontrivially palindromic in base 16.

861485 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 can be written as a sum of positive squares in 2 ways, for example, as 90601 + 770884 = 301^2 + 878^2 .

It is a cyclic number.

It is not a de Polignac number, because 861485 - 2¹⁸ = 599341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86144 + ... + 86153.

It is an arithmetic number, because the mean of its divisors is an integer number (258447).

2⁸⁶¹⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

861485 is a deficient number, since it is larger than the sum of its proper divisors (172303).

861485 is a wasteful number, since it uses less digits than its factorization.

861485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172302.

The product of its digits is 7680, while the sum is 32.

The square root of 861485 is about 928.1621625557. The cubic root of 861485 is about 95.1515586358.

The spelling of 861485 in words is "eight hundred sixty-one thousand, four hundred eighty-five".