868297757 has 2 divisors, whose sum is σ = 868297758. Its totient is φ = 868297756.

The previous prime is 868297733. The next prime is 868297783. The reversal of 868297757 is 757792868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 470933401 + 397364356 = 21701^2 + 19934^2 .

It is a cyclic number.

It is not a de Polignac number, because 868297757 - 2¹⁸ = 868035613 is a prime.

It is a super-2 number, since 2×868297757² = 1507881989622462098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 868297696 and 868297705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868291757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434148878 + 434148879.

It is an arithmetic number, because the mean of its divisors is an integer number (434148879).

Almost surely, 2^868297757 is an apocalyptic number.

It is an amenable number.

868297757 is a deficient number, since it is larger than the sum of its proper divisors (1).

868297757 is an equidigital number, since it uses as much as digits as its factorization.

868297757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11854080, while the sum is 59.

The square root of 868297757 is about 29466.8925575806. The cubic root of 868297757 is about 954.0172476727.

The spelling of 868297757 in words is "eight hundred sixty-eight million, two hundred ninety-seven thousand, seven hundred fifty-seven".