864318461 has 2 divisors, whose sum is σ = 864318462. Its totient is φ = 864318460.

The previous prime is 864318431. The next prime is 864318479. The reversal of 864318461 is 164813468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 456036025 + 408282436 = 21355^2 + 20206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864318461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864318401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432159230 + 432159231.

It is an arithmetic number, because the mean of its divisors is an integer number (432159231).

Almost surely, 2^864318461 is an apocalyptic number.

It is an amenable number.

864318461 is a deficient number, since it is larger than the sum of its proper divisors (1).

864318461 is an equidigital number, since it uses as much as digits as its factorization.

864318461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 41.

The square root of 864318461 is about 29399.2935459341. The cubic root of 864318461 is about 952.5576365579.

The spelling of 864318461 in words is "eight hundred sixty-four million, three hundred eighteen thousand, four hundred sixty-one".