9645672287 has 2 divisors, whose sum is σ = 9645672288. Its totient is φ = 9645672286.

The previous prime is 9645672233. The next prime is 9645672293. The reversal of 9645672287 is 7822765469.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9645672287 - 2¹² = 9645668191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9645674287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4822836143 + 4822836144.

It is an arithmetic number, because the mean of its divisors is an integer number (4822836144).

Almost surely, 2^9645672287 is an apocalyptic number.

9645672287 is a deficient number, since it is larger than the sum of its proper divisors (1).

9645672287 is an equidigital number, since it uses as much as digits as its factorization.

9645672287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 56.

The square root of 9645672287 is about 98212.3835725414. The cubic root of 9645672287 is about 2128.6822274311.

The spelling of 9645672287 in words is "nine billion, six hundred forty-five million, six hundred seventy-two thousand, two hundred eighty-seven".