868711537 has 2 divisors, whose sum is σ = 868711538. Its totient is φ = 868711536.

The previous prime is 868711513. The next prime is 868711549. The reversal of 868711537 is 735117868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 824608656 + 44102881 = 28716^2 + 6641^2 .

It is a cyclic number.

It is not a de Polignac number, because 868711537 - 2¹¹ = 868709489 is a prime.

It is not a weakly prime, because it can be changed into another prime (868721537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434355768 + 434355769.

It is an arithmetic number, because the mean of its divisors is an integer number (434355769).

Almost surely, 2^868711537 is an apocalyptic number.

It is an amenable number.

868711537 is a deficient number, since it is larger than the sum of its proper divisors (1).

868711537 is an equidigital number, since it uses as much as digits as its factorization.

868711537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 46.

The square root of 868711537 is about 29473.9128213408. The cubic root of 868711537 is about 954.1687665745.

The spelling of 868711537 in words is "eight hundred sixty-eight million, seven hundred eleven thousand, five hundred thirty-seven".