868716677 has 8 divisors (see below), whose sum is σ = 934897752. Its totient is φ = 804211200.

The previous prime is 868716671. The next prime is 868716683. The reversal of 868716677 is 776617868.

It is a Cunningham number, because it is equal to 29474²+1.

It is an interprime number because it is at equal distance from previous prime (868716671) and next prime (868716683).

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 868716676 = 1^2 + 29474^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 868716677 - 2¹⁶ = 868651141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868716671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417824 + ... + 419897.

It is an arithmetic number, because the mean of its divisors is an integer number (116862219).

Almost surely, 2^868716677 is an apocalyptic number.

It is an amenable number.

868716677 is a deficient number, since it is larger than the sum of its proper divisors (66181075).

868716677 is a wasteful number, since it uses less digits than its factorization.

868716677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837799.

The product of its digits is 4741632, while the sum is 56.

The square root of 868716677 is about 29474.0000169641. Note that the first 4 decimals coincide. The cubic root of 868716677 is about 954.1706484489.

The spelling of 868716677 in words is "eight hundred sixty-eight million, seven hundred sixteen thousand, six hundred seventy-seven".