9640529 has 2 divisors, whose sum is σ = 9640530. Its totient is φ = 9640528.

The previous prime is 9640523. The next prime is 9640549. The reversal of 9640529 is 9250469.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9579025 + 61504 = 3095^2 + 248^2 .

It is an emirp because it is prime and its reverse (9250469) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9640529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9640523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4820264 + 4820265.

It is an arithmetic number, because the mean of its divisors is an integer number (4820265).

Almost surely, 2^9640529 is an apocalyptic number.

It is an amenable number.

9640529 is a deficient number, since it is larger than the sum of its proper divisors (1).

9640529 is an equidigital number, since it uses as much as digits as its factorization.

9640529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 9640529 is about 3104.9201277972. The cubic root of 9640529 is about 212.8303806593.

The spelling of 9640529 in words is "nine million, six hundred forty thousand, five hundred twenty-nine".