647273348089 has 27 divisors (see below), whose sum is σ = 668946191823. Its totient is φ = 626299977312.

The previous prime is 647273348083. The next prime is 647273348119. The reversal of 647273348089 is 980843372746.

It is a happy number.

The square root of 647273348089 is 804533.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 367423884025 + 279849464064 = 606155^2 + 529008^2 .

It is not a de Polignac number, because 647273348089 - 2⁹ = 647273347577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647273348083) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6049283574 + ... + 6049283680.

Almost surely, 2^647273348089 is an apocalyptic number.

647273348089 is the 804533-rd square number.

647273348089 is the 402267-th centered octagonal number.

It is an amenable number.

647273348089 is a deficient number, since it is larger than the sum of its proper divisors (21672843734).

647273348089 is an frugal number, since it uses more digits than its factorization.

647273348089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 61.

The spelling of 647273348089 in words is "six hundred forty-seven billion, two hundred seventy-three million, three hundred forty-eight thousand, eighty-nine".