8663537 has 2 divisors, whose sum is σ = 8663538. Its totient is φ = 8663536.

The previous prime is 8663521. The next prime is 8663579. The reversal of 8663537 is 7353668.

8663537 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8202496 + 461041 = 2864^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 8663537 - 2⁴ = 8663521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8663537.

It is not a weakly prime, because it can be changed into another prime (8663507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4331768 + 4331769.

It is an arithmetic number, because the mean of its divisors is an integer number (4331769).

Almost surely, 2^8663537 is an apocalyptic number.

It is an amenable number.

8663537 is a deficient number, since it is larger than the sum of its proper divisors (1).

8663537 is an equidigital number, since it uses as much as digits as its factorization.

8663537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 8663537 is about 2943.3886933261. The cubic root of 8663537 is about 205.3832766179.

The spelling of 8663537 in words is "eight million, six hundred sixty-three thousand, five hundred thirty-seven".