863677707857 has 2 divisors, whose sum is σ = 863677707858. Its totient is φ = 863677707856.

The previous prime is 863677707779. The next prime is 863677707863. The reversal of 863677707857 is 758707776368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 650747142721 + 212930565136 = 806689^2 + 461444^2 .

It is a cyclic number.

It is not a de Polignac number, because 863677707857 - 2²⁴ = 863660930641 is a prime.

It is not a weakly prime, because it can be changed into another prime (863677707887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431838853928 + 431838853929.

It is an arithmetic number, because the mean of its divisors is an integer number (431838853929).

Almost surely, 2^863677707857 is an apocalyptic number.

It is an amenable number.

863677707857 is a deficient number, since it is larger than the sum of its proper divisors (1).

863677707857 is an equidigital number, since it uses as much as digits as its factorization.

863677707857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580849920, while the sum is 71.

The spelling of 863677707857 in words is "eight hundred sixty-three billion, six hundred seventy-seven million, seven hundred seven thousand, eight hundred fifty-seven".