555545664 has 84 divisors (see below), whose sum is σ = 1598696320. Its totient is φ = 184446720.

The previous prime is 555545659. The next prime is 555545671. The reversal of 555545664 is 466545555.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154317 + ... + 157875.

Almost surely, 2^555545664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555545664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (799348160).

555545664 is an abundant number, since it is smaller than the sum of its proper divisors (1043150656).

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

555545664 is a wasteful number, since it uses less digits than its factorization.

555545664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848 (or 3835 counting only the distinct ones).

The product of its digits is 1800000, while the sum is 45.

The square root of 555545664 is about 23570.0162070373. The cubic root of 555545664 is about 822.0658124798.

The spelling of 555545664 in words is "five hundred fifty-five million, five hundred forty-five thousand, six hundred sixty-four".