864361 has 2 divisors, whose sum is σ = 864362. Its totient is φ = 864360.

The previous prime is 864359. The next prime is 864379. The reversal of 864361 is 163468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 670761 + 193600 = 819^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 864361 - 2¹ = 864359 is a prime.

Together with 864359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (864301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432180 + 432181.

It is an arithmetic number, because the mean of its divisors is an integer number (432181).

2⁸⁶⁴³⁶¹ is an apocalyptic number.

It is an amenable number.

864361 is a deficient number, since it is larger than the sum of its proper divisors (1).

864361 is an equidigital number, since it uses as much as digits as its factorization.

864361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 864361 is about 929.7101698917. The cubic root of 864361 is about 95.2573263585.

It can be divided in two parts, 864 and 361, that added together give a triangular number (1225 = T₄₉).

The spelling of 864361 in words is "eight hundred sixty-four thousand, three hundred sixty-one".