555646806 has 96 divisors (see below), whose sum is σ = 1441413792. Its totient is φ = 152455680.

The previous prime is 555646799. The next prime is 555646823. The reversal of 555646806 is 608646555.

It is a happy number.

555646806 is a `hidden beast` number, since 5 + 5 + 564 + 6 + 80 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134386 + ... + 138458.

It is an arithmetic number, because the mean of its divisors is an integer number (15014727).

Almost surely, 2^555646806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555646806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720706896).

555646806 is an abundant number, since it is smaller than the sum of its proper divisors (885766986).

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

555646806 is a wasteful number, since it uses less digits than its factorization.

555646806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158 (or 4155 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The square root of 555646806 is about 23572.1616743140. The cubic root of 555646806 is about 822.1156975691.

The spelling of 555646806 in words is "five hundred fifty-five million, six hundred forty-six thousand, eight hundred six".