647304 has 32 divisors (see below), whose sum is σ = 1849920. Its totient is φ = 184896.

The previous prime is 647303. The next prime is 647321. The reversal of 647304 is 403746.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647304.

It is not an unprimeable number, because it can be changed into a prime (647303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1759 + ... + 2094.

It is an arithmetic number, because the mean of its divisors is an integer number (57810).

2⁶⁴⁷³⁰⁴ is an apocalyptic number.

It is an amenable number.

647304 is an abundant number, since it is smaller than the sum of its proper divisors (1202616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647304 is a wasteful number, since it uses less digits than its factorization.

647304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869 (or 3865 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 647304 is about 804.5520492796. The cubic root of 647304 is about 86.5039814622.

The spelling of 647304 in words is "six hundred forty-seven thousand, three hundred four".