861347 has 2 divisors, whose sum is σ = 861348. Its totient is φ = 861346.

The previous prime is 861317. The next prime is 861353. The reversal of 861347 is 743168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861347 - 2¹⁰ = 860323 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 861347.

It is not a weakly prime, because it can be changed into another prime (861317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430673 + 430674.

It is an arithmetic number, because the mean of its divisors is an integer number (430674).

2⁸⁶¹³⁴⁷ is an apocalyptic number.

861347 is a deficient number, since it is larger than the sum of its proper divisors (1).

861347 is an equidigital number, since it uses as much as digits as its factorization.

861347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 861347 is about 928.0878191206. The cubic root of 861347 is about 95.1464776356.

The spelling of 861347 in words is "eight hundred sixty-one thousand, three hundred forty-seven".