861466 has 8 divisors (see below), whose sum is σ = 1296180. Its totient is φ = 429408.

The previous prime is 861439. The next prime is 861491. The reversal of 861466 is 664168.

It can be written as a sum of positive squares in 2 ways, for example, as 848241 + 13225 = 921^2 + 115^2 .

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

It is an unprimeable number.

861466 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760 + ... + 1516.

2⁸⁶¹⁴⁶⁶ is an apocalyptic number.

861466 is a deficient number, since it is larger than the sum of its proper divisors (434714).

861466 is a wasteful number, since it uses less digits than its factorization.

861466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328.

The product of its digits is 6912, while the sum is 31.

The square root of 861466 is about 928.1519272188. The cubic root of 861466 is about 95.1508591100.

The spelling of 861466 in words is "eight hundred sixty-one thousand, four hundred sixty-six".