406555 has 8 divisors (see below), whose sum is σ = 516672. Its totient is φ = 306048.

The previous prime is 406547. The next prime is 406559. The reversal of 406555 is 555604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 406555 - 2³ = 406547 is a prime.

It is a d-powerful number, because it can be written as 4³ + 0 + 5² + 6³ + 5⁶ + 5⁸ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2307 + ... + 2476.

It is an arithmetic number, because the mean of its divisors is an integer number (64584).

2⁴⁰⁶⁵⁵⁵ is an apocalyptic number.

406555 is a deficient number, since it is larger than the sum of its proper divisors (110117).

406555 is a wasteful number, since it uses less digits than its factorization.

406555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 406555 is about 637.6166559932. The cubic root of 406555 is about 74.0809316645.

It can be divided in two parts, 406 and 555, that added together give a square (961 = 31²).

The spelling of 406555 in words is "four hundred six thousand, five hundred fifty-five".