647230589 has 2 divisors, whose sum is σ = 647230590. Its totient is φ = 647230588.

The previous prime is 647230567. The next prime is 647230627. The reversal of 647230589 is 985032746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 630763225 + 16467364 = 25115^2 + 4058^2 .

It is a cyclic number.

It is not a de Polignac number, because 647230589 - 2¹² = 647226493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647230559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323615294 + 323615295.

It is an arithmetic number, because the mean of its divisors is an integer number (323615295).

Almost surely, 2^647230589 is an apocalyptic number.

It is an amenable number.

647230589 is a deficient number, since it is larger than the sum of its proper divisors (1).

647230589 is an equidigital number, since it uses as much as digits as its factorization.

647230589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 647230589 is about 25440.7269746759. The cubic root of 647230589 is about 865.0071118842.

The spelling of 647230589 in words is "six hundred forty-seven million, two hundred thirty thousand, five hundred eighty-nine".