659911 has 4 divisors (see below), whose sum is σ = 754192. Its totient is φ = 565632.

The previous prime is 659899. The next prime is 659917. The reversal of 659911 is 119956.

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

It is a cyclic number.

It is not a de Polignac number, because 659911 - 2⁷ = 659783 is a prime.

It is a Duffinian number.

659911 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659917) 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, 47130 + ... + 47143.

It is an arithmetic number, because the mean of its divisors is an integer number (188548).

2⁶⁵⁹⁹¹¹ is an apocalyptic number.

659911 is a deficient number, since it is larger than the sum of its proper divisors (94281).

659911 is an equidigital number, since it uses as much as digits as its factorization.

659911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94280.

The product of its digits is 2430, while the sum is 31.

The square root of 659911 is about 812.3490629034. The cubic root of 659911 is about 87.0619631686.

The spelling of 659911 in words is "six hundred fifty-nine thousand, nine hundred eleven".