647084 has 6 divisors (see below), whose sum is σ = 1132404. Its totient is φ = 323540.

The previous prime is 647081. The next prime is 647099. The reversal of 647084 is 480746.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647084.

It is not an unprimeable number, because it can be changed into a prime (647081) 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 as a sum of consecutive naturals, namely, 80882 + ... + 80889.

It is an arithmetic number, because the mean of its divisors is an integer number (188734).

2⁶⁴⁷⁰⁸⁴ is an apocalyptic number.

It is an amenable number.

647084 is a deficient number, since it is larger than the sum of its proper divisors (485320).

647084 is a wasteful number, since it uses less digits than its factorization.

647084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161775 (or 161773 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 647084 is about 804.4153156175. The cubic root of 647084 is about 86.4941802805.

The spelling of 647084 in words is "six hundred forty-seven thousand, eighty-four".