647011 has 2 divisors, whose sum is σ = 647012. Its totient is φ = 647010.

The previous prime is 646993. The next prime is 647033. The reversal of 647011 is 110746.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 647011 - 2⁵ = 646979 is a prime.

647011 is a lucky number.

It is a nialpdrome in base 7 and base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 647011.

It is not a weakly prime, because it can be changed into another 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, 323505 + 323506.

It is an arithmetic number, because the mean of its divisors is an integer number (323506).

2⁶⁴⁷⁰¹¹ is an apocalyptic number.

647011 is a deficient number, since it is larger than the sum of its proper divisors (1).

647011 is an equidigital number, since it uses as much as digits as its factorization.

647011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 647011 is about 804.3699397665. The cubic root of 647011 is about 86.4909275793.

Adding to 647011 its reverse (110746), we get a palindrome (757757).

The spelling of 647011 in words is "six hundred forty-seven thousand, eleven".