647600713 has 2 divisors, whose sum is σ = 647600714. Its totient is φ = 647600712.

The previous prime is 647600659. The next prime is 647600717. The reversal of 647600713 is 317006746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 647600704 + 9 = 25448^2 + 3^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-647600713 is a prime.

It is not a weakly prime, because it can be changed into another prime (647600717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323800356 + 323800357.

It is an arithmetic number, because the mean of its divisors is an integer number (323800357).

Almost surely, 2^647600713 is an apocalyptic number.

It is an amenable number.

647600713 is a deficient number, since it is larger than the sum of its proper divisors (1).

647600713 is an equidigital number, since it uses as much as digits as its factorization.

647600713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 647600713 is about 25448.0001768312. Note that the first 3 decimals coincide. The cubic root of 647600713 is about 865.1719675469.

The spelling of 647600713 in words is "six hundred forty-seven million, six hundred thousand, seven hundred thirteen".