647067 has 4 divisors (see below), whose sum is σ = 862760. Its totient is φ = 431376.

The previous prime is 647057. The next prime is 647069. The reversal of 647067 is 760746.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 647067 - 2¹¹ = 645019 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647067.

It is not an unprimeable number, because it can be changed into a prime (647069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107842 + ... + 107847.

It is an arithmetic number, because the mean of its divisors is an integer number (215690).

2⁶⁴⁷⁰⁶⁷ is an apocalyptic number.

647067 is a deficient number, since it is larger than the sum of its proper divisors (215693).

647067 is a wasteful number, since it uses less digits than its factorization.

647067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215692.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 647067 is about 804.4047488671. The cubic root of 647067 is about 86.4934228240.

The spelling of 647067 in words is "six hundred forty-seven thousand, sixty-seven".