645730734367307 has 2 divisors, whose sum is σ = 645730734367308. Its totient is φ = 645730734367306.

The previous prime is 645730734367189. The next prime is 645730734367351. The reversal of 645730734367307 is 703763437037546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 645730734367307 - 2⁴⁰ = 644631222739531 is a prime.

It is not a weakly prime, because it can be changed into another prime (645730734327307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322865367183653 + 322865367183654.

It is an arithmetic number, because the mean of its divisors is an integer number (322865367183654).

Almost surely, 2^{645730734367307} is an apocalyptic number.

645730734367307 is a deficient number, since it is larger than the sum of its proper divisors (1).

645730734367307 is an equidigital number, since it uses as much as digits as its factorization.

645730734367307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560105280, while the sum is 65.

The spelling of 645730734367307 in words is "six hundred forty-five trillion, seven hundred thirty billion, seven hundred thirty-four million, three hundred sixty-seven thousand, three hundred seven".