863714861 has 2 divisors, whose sum is σ = 863714862. Its totient is φ = 863714860.

The previous prime is 863714851. The next prime is 863714909. The reversal of 863714861 is 168417368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855270025 + 8444836 = 29245^2 + 2906^2 .

It is a cyclic number.

It is not a de Polignac number, because 863714861 - 2¹⁴ = 863698477 is a prime.

It is a super-2 number, since 2×863714861² = 1492006722224498642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863714851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431857430 + 431857431.

It is an arithmetic number, because the mean of its divisors is an integer number (431857431).

Almost surely, 2^863714861 is an apocalyptic number.

It is an amenable number.

863714861 is a deficient number, since it is larger than the sum of its proper divisors (1).

863714861 is an equidigital number, since it uses as much as digits as its factorization.

863714861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 863714861 is about 29389.0262002673. The cubic root of 863714861 is about 952.3358442017.

The spelling of 863714861 in words is "eight hundred sixty-three million, seven hundred fourteen thousand, eight hundred sixty-one".