655803605 has 32 divisors (see below), whose sum is σ = 828638208. Its totient is φ = 497664000.

The previous prime is 655803583. The next prime is 655803607. The reversal of 655803605 is 506308556.

655803605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-655803605 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 (655803607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2551637 + ... + 2551893.

It is an arithmetic number, because the mean of its divisors is an integer number (25894944).

Almost surely, 2^655803605 is an apocalyptic number.

It is an amenable number.

655803605 is a deficient number, since it is larger than the sum of its proper divisors (172834603).

655803605 is a wasteful number, since it uses less digits than its factorization.

655803605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 655803605 is about 25608.6626944868. The cubic root of 655803605 is about 868.8095776818.

The spelling of 655803605 in words is "six hundred fifty-five million, eight hundred three thousand, six hundred five".