659465 has 4 divisors (see below), whose sum is σ = 791364. Its totient is φ = 527568.

The previous prime is 659453. The next prime is 659467. The reversal of 659465 is 564956.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 246016 + 413449 = 496^2 + 643^2 .

It is a cyclic number.

It is not a de Polignac number, because 659465 - 2¹⁴ = 643081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (659467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65942 + ... + 65951.

It is an arithmetic number, because the mean of its divisors is an integer number (197841).

2⁶⁵⁹⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

659465 is a deficient number, since it is larger than the sum of its proper divisors (131899).

659465 is a wasteful number, since it uses less digits than its factorization.

659465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131898.

The product of its digits is 32400, while the sum is 35.

The square root of 659465 is about 812.0745039712. The cubic root of 659465 is about 87.0423451764.

The spelling of 659465 in words is "six hundred fifty-nine thousand, four hundred sixty-five".