868630769 has 2 divisors, whose sum is σ = 868630770. Its totient is φ = 868630768.

The previous prime is 868630753. The next prime is 868630787. The reversal of 868630769 is 967036868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 756525025 + 112105744 = 27505^2 + 10588^2 .

It is a cyclic number.

It is not a de Polignac number, because 868630769 - 2⁴ = 868630753 is a prime.

It is a super-3 number, since 3×868630769³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 868630769.

It is not a weakly prime, because it can be changed into another prime (868630729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434315384 + 434315385.

It is an arithmetic number, because the mean of its divisors is an integer number (434315385).

Almost surely, 2^868630769 is an apocalyptic number.

It is an amenable number.

868630769 is a deficient number, since it is larger than the sum of its proper divisors (1).

868630769 is an equidigital number, since it uses as much as digits as its factorization.

868630769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The square root of 868630769 is about 29472.5426286909. The cubic root of 868630769 is about 954.1391945443.

The spelling of 868630769 in words is "eight hundred sixty-eight million, six hundred thirty thousand, seven hundred sixty-nine".