9640687003 has 2 divisors, whose sum is σ = 9640687004. Its totient is φ = 9640687002.

The previous prime is 9640686943. The next prime is 9640687013. The reversal of 9640687003 is 3007860469.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9640687003 - 2⁹ = 9640686491 is a prime.

It is not a weakly prime, because it can be changed into another prime (9640687013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4820343501 + 4820343502.

It is an arithmetic number, because the mean of its divisors is an integer number (4820343502).

Almost surely, 2^9640687003 is an apocalyptic number.

9640687003 is a deficient number, since it is larger than the sum of its proper divisors (1).

9640687003 is an equidigital number, since it uses as much as digits as its factorization.

9640687003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 9640687003 is about 98187.0001731390. Note that the first 3 decimals coincide. The cubic root of 9640687003 is about 2128.3154337743.

The spelling of 9640687003 in words is "nine billion, six hundred forty million, six hundred eighty-seven thousand, three".