647443473 has 16 divisors (see below), whose sum is σ = 904339200. Its totient is φ = 411465600.

The previous prime is 647443439. The next prime is 647443481. The reversal of 647443473 is 374344746.

It is not a de Polignac number, because 647443473 - 2¹⁴ = 647427089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (647443273) 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, 40228 + ... + 53973.

It is an arithmetic number, because the mean of its divisors is an integer number (56521200).

Almost surely, 2^647443473 is an apocalyptic number.

It is an amenable number.

647443473 is a deficient number, since it is larger than the sum of its proper divisors (256895727).

647443473 is a wasteful number, since it uses less digits than its factorization.

647443473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94312.

The product of its digits is 677376, while the sum is 42.

The square root of 647443473 is about 25444.9105520141. The cubic root of 647443473 is about 865.1019394935.

The spelling of 647443473 in words is "six hundred forty-seven million, four hundred forty-three thousand, four hundred seventy-three".