647065253 has 2 divisors, whose sum is σ = 647065254. Its totient is φ = 647065252.

The previous prime is 647065249. The next prime is 647065259. The reversal of 647065253 is 352560746.

647065253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 645261604 + 1803649 = 25402^2 + 1343^2 .

It is a cyclic number.

It is not a de Polignac number, because 647065253 - 2² = 647065249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647065259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323532626 + 323532627.

It is an arithmetic number, because the mean of its divisors is an integer number (323532627).

Almost surely, 2^647065253 is an apocalyptic number.

It is an amenable number.

647065253 is a deficient number, since it is larger than the sum of its proper divisors (1).

647065253 is an equidigital number, since it uses as much as digits as its factorization.

647065253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 38.

The square root of 647065253 is about 25437.4773316852. The cubic root of 647065253 is about 864.9334498345.

The spelling of 647065253 in words is "six hundred forty-seven million, sixty-five thousand, two hundred fifty-three".