408655 has 8 divisors (see below), whose sum is σ = 528192. Its totient is φ = 301728.

The previous prime is 408643. The next prime is 408659. The reversal of 408655 is 556804.

408655 = 158² + 159² + ... + 172².

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 408655 - 2⁵ = 408623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408659) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3079 + ... + 3208.

It is an arithmetic number, because the mean of its divisors is an integer number (66024).

2⁴⁰⁸⁶⁵⁵ is an apocalyptic number.

408655 is a deficient number, since it is larger than the sum of its proper divisors (119537).

408655 is a wasteful number, since it uses less digits than its factorization.

408655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6305.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 408655 is about 639.2612924306. The cubic root of 408655 is about 74.2082640587.

The spelling of 408655 in words is "four hundred eight thousand, six hundred fifty-five".