461856605 has 18 divisors (see below), whose sum is σ = 645184026. Its totient is φ = 316471008.

The previous prime is 461856529. The next prime is 461856643. The reversal of 461856605 is 506658164.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 326669476 + 135187129 = 18074^2 + 11627^2 .

It is not a de Polignac number, because 461856605 - 2¹² = 461852509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 335699 + ... + 337071.

It is an arithmetic number, because the mean of its divisors is an integer number (35843557).

Almost surely, 2^461856605 is an apocalyptic number.

It is an amenable number.

461856605 is a deficient number, since it is larger than the sum of its proper divisors (183327421).

461856605 is an frugal number, since it uses more digits than its factorization.

461856605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765 (or 1385 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 461856605 is about 21490.8493317505. The cubic root of 461856605 is about 772.9814163548.

The spelling of 461856605 in words is "four hundred sixty-one million, eight hundred fifty-six thousand, six hundred five".