647125211 has 2 divisors, whose sum is σ = 647125212. Its totient is φ = 647125210.

The previous prime is 647125183. The next prime is 647125231. The reversal of 647125211 is 112521746.

647125211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 647125211 - 2¹⁴ = 647108827 is a prime.

It is not a weakly prime, because it can be changed into another prime (647125231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323562605 + 323562606.

It is an arithmetic number, because the mean of its divisors is an integer number (323562606).

Almost surely, 2^647125211 is an apocalyptic number.

647125211 is a deficient number, since it is larger than the sum of its proper divisors (1).

647125211 is an equidigital number, since it uses as much as digits as its factorization.

647125211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 29.

The square root of 647125211 is about 25438.6558410620. The cubic root of 647125211 is about 864.9601643365.

Adding to 647125211 its reverse (112521746), we get a palindrome (759646957).

The spelling of 647125211 in words is "six hundred forty-seven million, one hundred twenty-five thousand, two hundred eleven".