659899 has 2 divisors, whose sum is σ = 659900. Its totient is φ = 659898.

The previous prime is 659881. The next prime is 659917. The reversal of 659899 is 998956.

It is a happy number.

659899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (659881) and next prime (659917).

It is a cyclic number.

It is not a de Polignac number, because 659899 - 2¹⁵ = 627131 is a prime.

It is not a weakly prime, because it can be changed into another prime (659819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329949 + 329950.

It is an arithmetic number, because the mean of its divisors is an integer number (329950).

2⁶⁵⁹⁸⁹⁹ is an apocalyptic number.

659899 is a deficient number, since it is larger than the sum of its proper divisors (1).

659899 is an equidigital number, since it uses as much as digits as its factorization.

659899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 46.

The square root of 659899 is about 812.3416768823. The cubic root of 659899 is about 87.0614354460.

The spelling of 659899 in words is "six hundred fifty-nine thousand, eight hundred ninety-nine".