655120556 has 12 divisors (see below), whose sum is σ = 1185994320. Its totient is φ = 316265040.

The previous prime is 655120553. The next prime is 655120603. The reversal of 655120556 is 655021556.

It is not an unprimeable number, because it can be changed into a prime (655120553) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2823680 + ... + 2823911.

It is an arithmetic number, because the mean of its divisors is an integer number (98832860).

Almost surely, 2^655120556 is an apocalyptic number.

It is an amenable number.

655120556 is a deficient number, since it is larger than the sum of its proper divisors (530873764).

655120556 is a wasteful number, since it uses less digits than its factorization.

655120556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5647624 (or 5647622 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 655120556 is about 25595.3229321296. The cubic root of 655120556 is about 868.5078381268.

The spelling of 655120556 in words is "six hundred fifty-five million, one hundred twenty thousand, five hundred fifty-six".