647359 has 2 divisors, whose sum is σ = 647360. Its totient is φ = 647358.

The previous prime is 647357. The next prime is 647363. The reversal of 647359 is 953746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 647359 - 2¹ = 647357 is a prime.

Together with 647357, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323679 + 323680.

It is an arithmetic number, because the mean of its divisors is an integer number (323680).

2⁶⁴⁷³⁵⁹ is an apocalyptic number.

647359 is a deficient number, since it is larger than the sum of its proper divisors (1).

647359 is an equidigital number, since it uses as much as digits as its factorization.

647359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 647359 is about 804.5862290644. The cubic root of 647359 is about 86.5064314106.

The spelling of 647359 in words is "six hundred forty-seven thousand, three hundred fifty-nine".