461665 has 4 divisors (see below), whose sum is σ = 554004. Its totient is φ = 369328.

The previous prime is 461653. The next prime is 461677. The reversal of 461665 is 566164.

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

It is an interprime number because it is at equal distance from previous prime (461653) and next prime (461677).

It can be written as a sum of positive squares in 2 ways, for example, as 63504 + 398161 = 252^2 + 631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-461665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46162 + ... + 46171.

It is an arithmetic number, because the mean of its divisors is an integer number (138501).

2⁴⁶¹⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

461665 is a deficient number, since it is larger than the sum of its proper divisors (92339).

461665 is an equidigital number, since it uses as much as digits as its factorization.

461665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92338.

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

The square root of 461665 is about 679.4593438904. The cubic root of 461665 is about 77.2874509010.

It can be divided in two parts, 46 and 1665, that added together give a triangular number (1711 = T₅₈).

The spelling of 461665 in words is "four hundred sixty-one thousand, six hundred sixty-five".