555616660 has 24 divisors (see below), whose sum is σ = 1168183296. Its totient is φ = 221982240.

The previous prime is 555616643. The next prime is 555616667. The reversal of 555616660 is 66616555.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555616667) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1165 + ... + 33355.

It is an arithmetic number, because the mean of its divisors is an integer number (48674304).

Almost surely, 2^555616660 is an apocalyptic number.

It is an amenable number.

555616660 is an abundant number, since it is smaller than the sum of its proper divisors (612566636).

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

555616660 is a wasteful number, since it uses less digits than its factorization.

555616660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33063 (or 33061 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 555616660 is about 23571.5222249222. The cubic root of 555616660 is about 822.1008296423.

The spelling of 555616660 in words is "five hundred fifty-five million, six hundred sixteen thousand, six hundred sixty".