861738 has 32 divisors (see below), whose sum is σ = 1838592. Its totient is φ = 268800.

The previous prime is 861733. The next prime is 861739. The reversal of 861738 is 837168.

It is a junction number, because it is equal to n+sod(n) for n = 861699 and 861708.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 861738.

It is not an unprimeable number, because it can be changed into a prime (861733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7570 + ... + 7682.

It is an arithmetic number, because the mean of its divisors is an integer number (57456).

2⁸⁶¹⁷³⁸ is an apocalyptic number.

861738 is an abundant number, since it is smaller than the sum of its proper divisors (976854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

861738 is a wasteful number, since it uses less digits than its factorization.

861738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190.

The product of its digits is 8064, while the sum is 33.

The square root of 861738 is about 928.2984433898. The cubic root of 861738 is about 95.1608723936.

The spelling of 861738 in words is "eight hundred sixty-one thousand, seven hundred thirty-eight".