655005 has 16 divisors (see below), whose sum is σ = 1128960. Its totient is φ = 322368.

The previous prime is 655003. The next prime is 655013. The reversal of 655005 is 500556.

It is not a de Polignac number, because 655005 - 2¹ = 655003 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655005.

It is not an unprimeable number, because it can be changed into a prime (655001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1485 + ... + 1874.

It is an arithmetic number, because the mean of its divisors is an integer number (70560).

2⁶⁵⁵⁰⁰⁵ is an apocalyptic number.

655005 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

655005 is a deficient number, since it is larger than the sum of its proper divisors (473955).

655005 is a wasteful number, since it uses less digits than its factorization.

655005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 655005 is about 809.3237918164. The cubic root of 655005 is about 86.8456770074.

Subtracting from 655005 its reverse (500556), we obtain a square (154449 = 393²).

The spelling of 655005 in words is "six hundred fifty-five thousand, five".