659901 has 8 divisors (see below), whose sum is σ = 959904. Its totient is φ = 399920.

The previous prime is 659899. The next prime is 659917. The reversal of 659901 is 109956.

659901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 659901 - 2¹ = 659899 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9966 + ... + 10031.

It is an arithmetic number, because the mean of its divisors is an integer number (119988).

2⁶⁵⁹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

659901 is a deficient number, since it is larger than the sum of its proper divisors (300003).

659901 is a wasteful number, since it uses less digits than its factorization.

659901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20011.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 659901 is about 812.3429078905. The cubic root of 659901 is about 87.0615234002.

Subtracting from 659901 its reverse (109956), we obtain a palindrome (549945).

The spelling of 659901 in words is "six hundred fifty-nine thousand, nine hundred one".