404655 has 16 divisors (see below), whose sum is σ = 660960. Its totient is φ = 211328.

The previous prime is 404597. The next prime is 404671. The reversal of 404655 is 556404.

It is a cyclic number.

It is not a de Polignac number, because 404655 - 2⁷ = 404527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541 + ... + 1049.

It is an arithmetic number, because the mean of its divisors is an integer number (41310).

2⁴⁰⁴⁶⁵⁵ is an apocalyptic number.

404655 is a deficient number, since it is larger than the sum of its proper divisors (256305).

404655 is a wasteful number, since it uses less digits than its factorization.

404655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 404655 is about 636.1249877186. The cubic root of 404655 is about 73.9653477885.

It can be divided in two parts, 40465 and 5, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 404655 in words is "four hundred four thousand, six hundred fifty-five".