461845 has 4 divisors (see below), whose sum is σ = 554220. Its totient is φ = 369472.

The previous prime is 461843. The next prime is 461861. The reversal of 461845 is 548164.

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 224676 + 237169 = 474^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 461845 - 2¹ = 461843 is a prime.

461845 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461843) 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, 46180 + ... + 46189.

It is an arithmetic number, because the mean of its divisors is an integer number (138555).

2⁴⁶¹⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

461845 is a deficient number, since it is larger than the sum of its proper divisors (92375).

461845 is an equidigital number, since it uses as much as digits as its factorization.

461845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92374.

The product of its digits is 3840, while the sum is 28.

The square root of 461845 is about 679.5917892382. The cubic root of 461845 is about 77.2974942105.

It can be divided in two parts, 46 and 1845, that added together give a triangular number (1891 = T₆₁).

The spelling of 461845 in words is "four hundred sixty-one thousand, eight hundred forty-five".