655478556 has 24 divisors (see below), whose sum is σ = 1547879424. Its totient is φ = 215860080.

The previous prime is 655478531. The next prime is 655478557. The reversal of 655478556 is 655874556.

It is a happy number.

655478556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 655478499 and 655478508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655478557) 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, 328060 + ... + 330051.

It is an arithmetic number, because the mean of its divisors is an integer number (64494976).

Almost surely, 2^655478556 is an apocalyptic number.

It is an amenable number.

655478556 is an abundant number, since it is smaller than the sum of its proper divisors (892400868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655478556 is a wasteful number, since it uses less digits than its factorization.

655478556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658201 (or 658199 counting only the distinct ones).

The product of its digits is 5040000, while the sum is 51.

The square root of 655478556 is about 25602.3154421626. The cubic root of 655478556 is about 868.6660121625. Note that the first 3 decimals are identical.

The spelling of 655478556 in words is "six hundred fifty-five million, four hundred seventy-eight thousand, five hundred fifty-six".