647434323 has 16 divisors (see below), whose sum is σ = 961234560. Its totient is φ = 430690248.

The previous prime is 647434301. The next prime is 647434343. The reversal of 647434323 is 323434746.

647434323 is a `hidden beast` number, since 647 + 4 + 3 + 4 + 3 + 2 + 3 = 666.

It is not a de Polignac number, because 647434323 - 2⁹ = 647433811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (647434343) 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, 13065 + ... + 38282.

It is an arithmetic number, because the mean of its divisors is an integer number (60077160).

Almost surely, 2^647434323 is an apocalyptic number.

647434323 is a deficient number, since it is larger than the sum of its proper divisors (313800237).

647434323 is a wasteful number, since it uses less digits than its factorization.

647434323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51823 (or 51817 counting only the distinct ones).

The product of its digits is 145152, while the sum is 36.

The square root of 647434323 is about 25444.7307511791. The cubic root of 647434323 is about 865.0978641210.

The spelling of 647434323 in words is "six hundred forty-seven million, four hundred thirty-four thousand, three hundred twenty-three".