459661 has 4 divisors (see below), whose sum is σ = 462492. Its totient is φ = 456832.

The previous prime is 459649. The next prime is 459671. The reversal of 459661 is 166954.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166954 = 2 ⋅83477.

It can be written as a sum of positive squares in 2 ways, for example, as 366025 + 93636 = 605^2 + 306^2 .

It is a cyclic number.

It is not a de Polignac number, because 459661 - 2¹⁵ = 426893 is a prime.

It is a super-2 number, since 2×459661² = 422576469842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

459661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (459611) 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, 1156 + ... + 1501.

It is an arithmetic number, because the mean of its divisors is an integer number (115623).

2⁴⁵⁹⁶⁶¹ is an apocalyptic number.

It is an amenable number.

459661 is a deficient number, since it is larger than the sum of its proper divisors (2831).

459661 is a wasteful number, since it uses less digits than its factorization.

459661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830.

The product of its digits is 6480, while the sum is 31.

The square root of 459661 is about 677.9830381359. The cubic root of 459661 is about 77.1754586548.

The spelling of 459661 in words is "four hundred fifty-nine thousand, six hundred sixty-one".