647532853 has 16 divisors (see below), whose sum is σ = 721094400. Its totient is φ = 576463680.

The previous prime is 647532799. The next prime is 647532859. The reversal of 647532853 is 358235746.

It is a cyclic number.

It is not a de Polignac number, because 647532853 - 2⁹ = 647532341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647532859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605203 + ... + 606271.

It is an arithmetic number, because the mean of its divisors is an integer number (45068400).

Almost surely, 2^647532853 is an apocalyptic number.

It is an amenable number.

647532853 is a deficient number, since it is larger than the sum of its proper divisors (73561547).

647532853 is a wasteful number, since it uses less digits than its factorization.

647532853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172.

The product of its digits is 604800, while the sum is 43.

The square root of 647532853 is about 25446.6668347743. Note that the first 3 decimals coincide. The cubic root of 647532853 is about 865.1417469602.

The spelling of 647532853 in words is "six hundred forty-seven million, five hundred thirty-two thousand, eight hundred fifty-three".