8601689 has 2 divisors, whose sum is σ = 8601690. Its totient is φ = 8601688.

The previous prime is 8601683. The next prime is 8601707. The reversal of 8601689 is 9861068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6375625 + 2226064 = 2525^2 + 1492^2 .

It is a cyclic number.

It is not a de Polignac number, because 8601689 - 2¹⁶ = 8536153 is a prime.

It is not a weakly prime, because it can be changed into another prime (8601683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4300844 + 4300845.

It is an arithmetic number, because the mean of its divisors is an integer number (4300845).

Almost surely, 2^8601689 is an apocalyptic number.

It is an amenable number.

8601689 is a deficient number, since it is larger than the sum of its proper divisors (1).

8601689 is an equidigital number, since it uses as much as digits as its factorization.

8601689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 8601689 is about 2932.8636176952. The cubic root of 8601689 is about 204.8933730644.

The spelling of 8601689 in words is "eight million, six hundred one thousand, six hundred eighty-nine".