647602005 has 32 divisors (see below), whose sum is σ = 1057978368. Its totient is φ = 338184000.

The previous prime is 647601991. The next prime is 647602057. The reversal of 647602005 is 500206746.

It is not a de Polignac number, because 647602005 - 2⁴ = 647601989 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 158802 + ... + 162828.

It is an arithmetic number, because the mean of its divisors is an integer number (33061824).

Almost surely, 2^647602005 is an apocalyptic number.

It is an amenable number.

647602005 is a deficient number, since it is larger than the sum of its proper divisors (410376363).

647602005 is a wasteful number, since it uses less digits than its factorization.

647602005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 647602005 is about 25448.0255619174. The cubic root of 647602005 is about 865.1725429022.

The spelling of 647602005 in words is "six hundred forty-seven million, six hundred two thousand, five".