461609 has 2 divisors, whose sum is σ = 461610. Its totient is φ = 461608.

The previous prime is 461603. The next prime is 461627. The reversal of 461609 is 906164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354025 + 107584 = 595^2 + 328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-461609 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (461603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230804 + 230805.

It is an arithmetic number, because the mean of its divisors is an integer number (230805).

2⁴⁶¹⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

461609 is a deficient number, since it is larger than the sum of its proper divisors (1).

461609 is an equidigital number, since it uses as much as digits as its factorization.

461609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 461609 is about 679.4181334053. The cubic root of 461609 is about 77.2843257834.

The spelling of 461609 in words is "four hundred sixty-one thousand, six hundred nine".