868763569 has 2 divisors, whose sum is σ = 868763570. Its totient is φ = 868763568.

The previous prime is 868763531. The next prime is 868763579. The reversal of 868763569 is 965367868.

868763569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 493372944 + 375390625 = 22212^2 + 19375^2 .

It is a cyclic number.

It is not a de Polignac number, because 868763569 - 2¹¹ = 868761521 is a prime.

It is a super-2 number, since 2×868763569² = 1509500277643235522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (868763579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434381784 + 434381785.

It is an arithmetic number, because the mean of its divisors is an integer number (434381785).

Almost surely, 2^868763569 is an apocalyptic number.

It is an amenable number.

868763569 is a deficient number, since it is larger than the sum of its proper divisors (1).

868763569 is an equidigital number, since it uses as much as digits as its factorization.

868763569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 58.

The square root of 868763569 is about 29474.7954869919. The cubic root of 868763569 is about 954.1878163649.

The spelling of 868763569 in words is "eight hundred sixty-eight million, seven hundred sixty-three thousand, five hundred sixty-nine".