659947 has 2 divisors, whose sum is σ = 659948. Its totient is φ = 659946.

The previous prime is 659941. The next prime is 659951. The reversal of 659947 is 749956.

659947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 659947 - 2⁷ = 659819 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (659941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329973 + 329974.

It is an arithmetic number, because the mean of its divisors is an integer number (329974).

2⁶⁵⁹⁹⁴⁷ is an apocalyptic number.

659947 is a deficient number, since it is larger than the sum of its proper divisors (1).

659947 is an equidigital number, since it uses as much as digits as its factorization.

659947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 659947 is about 812.3712205636. The cubic root of 659947 is about 87.0635462981.

Subtracting 659947 from its reverse (749956), we obtain a palindrome (90009).

The spelling of 659947 in words is "six hundred fifty-nine thousand, nine hundred forty-seven".