555055668 has 36 divisors (see below), whose sum is σ = 1405387620. Its totient is φ = 184711296.

The previous prime is 555055649. The next prime is 555055673. The reversal of 555055668 is 866550555.

It can be written as a sum of positive squares in 2 ways, for example, as 307371024 + 247684644 = 17532^2 + 15738^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 9718 + ... + 34706.

It is an arithmetic number, because the mean of its divisors is an integer number (39038545).

Almost surely, 2^555055668 is an apocalyptic number.

It is an amenable number.

555055668 is an abundant number, since it is smaller than the sum of its proper divisors (850331952).

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

555055668 is a wasteful number, since it uses less digits than its factorization.

555055668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25616 (or 25611 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 45.

The square root of 555055668 is about 23559.6194366547. The cubic root of 555055668 is about 821.8240517083.

The spelling of 555055668 in words is "five hundred fifty-five million, fifty-five thousand, six hundred sixty-eight".