861122 has 8 divisors (see below), whose sum is σ = 1295676. Its totient is φ = 429232.

The previous prime is 861121. The next prime is 861131. The reversal of 861122 is 221168.

It can be written as a sum of positive squares in 2 ways, for example, as 657721 + 203401 = 811^2 + 451^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 861094 and 861103.

It is not an unprimeable number, because it can be changed into a prime (861121) 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, 728 + ... + 1500.

2⁸⁶¹¹²² is an apocalyptic number.

861122 is a deficient number, since it is larger than the sum of its proper divisors (434554).

861122 is a wasteful number, since it uses less digits than its factorization.

861122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332.

The product of its digits is 192, while the sum is 20.

The square root of 861122 is about 927.9665942263. The cubic root of 861122 is about 95.1381922323.

The spelling of 861122 in words is "eight hundred sixty-one thousand, one hundred twenty-two".