861326 has 4 divisors (see below), whose sum is σ = 1291992. Its totient is φ = 430662.

The previous prime is 861317. The next prime is 861347. The reversal of 861326 is 623168.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 861295 and 861304.

It is a congruent number.

It is an unprimeable number.

861326 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 as a sum of consecutive naturals, namely, 215330 + ... + 215333.

It is an arithmetic number, because the mean of its divisors is an integer number (322998).

2⁸⁶¹³²⁶ is an apocalyptic number.

861326 is a deficient number, since it is larger than the sum of its proper divisors (430666).

861326 is a wasteful number, since it uses less digits than its factorization.

861326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430665.

The product of its digits is 1728, while the sum is 26.

The square root of 861326 is about 928.0765054671. The cubic root of 861326 is about 95.1457043923.

The spelling of 861326 in words is "eight hundred sixty-one thousand, three hundred twenty-six".