647343 has 12 divisors (see below), whose sum is σ = 990288. Its totient is φ = 406080.

The previous prime is 647341. The next prime is 647357. The reversal of 647343 is 343746.

It is not a de Polignac number, because 647343 - 2¹ = 647341 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647343.

It is not an unprimeable number, because it can be changed into a prime (647341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1963 + ... + 2268.

It is an arithmetic number, because the mean of its divisors is an integer number (82524).

2⁶⁴⁷³⁴³ is an apocalyptic number.

647343 is a deficient number, since it is larger than the sum of its proper divisors (342945).

647343 is a wasteful number, since it uses less digits than its factorization.

647343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4254 (or 4251 counting only the distinct ones).

The product of its digits is 6048, while the sum is 27.

The square root of 647343 is about 804.5762860040. The cubic root of 647343 is about 86.5057187127.

It can be divided in two parts, 647 and 343, that added together give a triangular number (990 = T₄₄).

The spelling of 647343 in words is "six hundred forty-seven thousand, three hundred forty-three".