647053289 has 8 divisors (see below), whose sum is σ = 655361280. Its totient is φ = 638787376.

The previous prime is 647053283. The next prime is 647053301. The reversal of 647053289 is 982350746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-647053289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (647053283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21032 + ... + 41670.

It is an arithmetic number, because the mean of its divisors is an integer number (81920160).

Almost surely, 2^647053289 is an apocalyptic number.

It is an amenable number.

647053289 is a deficient number, since it is larger than the sum of its proper divisors (8307991).

647053289 is a wasteful number, since it uses less digits than its factorization.

647053289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21039.

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

The square root of 647053289 is about 25437.2421657695. The cubic root of 647053289 is about 864.9281190339.

The spelling of 647053289 in words is "six hundred forty-seven million, fifty-three thousand, two hundred eighty-nine".