655105605 has 64 divisors (see below), whose sum is σ = 1310404608. Its totient is φ = 271503360.

The previous prime is 655105589. The next prime is 655105613. The reversal of 655105605 is 506501556.

It is not a de Polignac number, because 655105605 - 2⁴ = 655105589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 665944 + ... + 666926.

It is an arithmetic number, because the mean of its divisors is an integer number (20475072).

Almost surely, 2^655105605 is an apocalyptic number.

It is an amenable number.

655105605 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

655105605 is a wasteful number, since it uses less digits than its factorization.

655105605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 655105605 is about 25595.0308653848. The cubic root of 655105605 is about 868.5012311192.

The spelling of 655105605 in words is "six hundred fifty-five million, one hundred five thousand, six hundred five".