863664313 has 2 divisors, whose sum is σ = 863664314. Its totient is φ = 863664312.

The previous prime is 863664301. The next prime is 863664349. The reversal of 863664313 is 313466368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 853340944 + 10323369 = 29212^2 + 3213^2 .

It is a cyclic number.

It is not a de Polignac number, because 863664313 - 2¹³ = 863656121 is a prime.

It is not a weakly prime, because it can be changed into another prime (863664353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431832156 + 431832157.

It is an arithmetic number, because the mean of its divisors is an integer number (431832157).

Almost surely, 2^863664313 is an apocalyptic number.

It is an amenable number.

863664313 is a deficient number, since it is larger than the sum of its proper divisors (1).

863664313 is an equidigital number, since it uses as much as digits as its factorization.

863664313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 40.

The square root of 863664313 is about 29388.1662068255. The cubic root of 863664313 is about 952.3172656894.

The spelling of 863664313 in words is "eight hundred sixty-three million, six hundred sixty-four thousand, three hundred thirteen".