659801 has 4 divisors (see below), whose sum is σ = 688512. Its totient is φ = 631092.

The previous prime is 659783. The next prime is 659819. The reversal of 659801 is 108956.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (659783) and next prime (659819).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-659801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659831) 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, 14321 + ... + 14366.

It is an arithmetic number, because the mean of its divisors is an integer number (172128).

2⁶⁵⁹⁸⁰¹ is an apocalyptic number.

It is an amenable number.

659801 is a deficient number, since it is larger than the sum of its proper divisors (28711).

659801 is a wasteful number, since it uses less digits than its factorization.

659801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28710.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 659801 is about 812.2813551966. The cubic root of 659801 is about 87.0571254718.

The spelling of 659801 in words is "six hundred fifty-nine thousand, eight hundred one".