647386097 has 2 divisors, whose sum is σ = 647386098. Its totient is φ = 647386096.

The previous prime is 647386087. The next prime is 647386109. The reversal of 647386097 is 790683746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 518427361 + 128958736 = 22769^2 + 11356^2 .

It is a cyclic number.

It is not a de Polignac number, because 647386097 - 2¹⁰ = 647385073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (647386007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323693048 + 323693049.

It is an arithmetic number, because the mean of its divisors is an integer number (323693049).

Almost surely, 2^647386097 is an apocalyptic number.

It is an amenable number.

647386097 is a deficient number, since it is larger than the sum of its proper divisors (1).

647386097 is an equidigital number, since it uses as much as digits as its factorization.

647386097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The square root of 647386097 is about 25443.7830717054. The cubic root of 647386097 is about 865.0763838235.

The spelling of 647386097 in words is "six hundred forty-seven million, three hundred eighty-six thousand, ninety-seven".