465661 has 4 divisors (see below), whose sum is σ = 532192. Its totient is φ = 399132.

The previous prime is 465659. The next prime is 465679. The reversal of 465661 is 166564.

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 a cyclic number.

It is not a de Polignac number, because 465661 - 2¹ = 465659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (465611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33255 + ... + 33268.

It is an arithmetic number, because the mean of its divisors is an integer number (133048).

2⁴⁶⁵⁶⁶¹ is an apocalyptic number.

It is an amenable number.

465661 is a deficient number, since it is larger than the sum of its proper divisors (66531).

465661 is an equidigital number, since it uses as much as digits as its factorization.

465661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66530.

The product of its digits is 4320, while the sum is 28.

The square root of 465661 is about 682.3935814470. The cubic root of 465661 is about 77.5098010497.

The spelling of 465661 in words is "four hundred sixty-five thousand, six hundred sixty-one".