555344666 has 4 divisors (see below), whose sum is σ = 833017002. Its totient is φ = 277672332.

The previous prime is 555344663. The next prime is 555344687. The reversal of 555344666 is 666443555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 549199225 + 6145441 = 23435^2 + 2479^2 .

It is not an unprimeable number, because it can be changed into a prime (555344663) 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 as a sum of consecutive naturals, namely, 138836165 + ... + 138836168.

Almost surely, 2^555344666 is an apocalyptic number.

555344666 is a deficient number, since it is larger than the sum of its proper divisors (277672336).

555344666 is a wasteful number, since it uses less digits than its factorization.

555344666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277672335.

The product of its digits is 1296000, while the sum is 44.

The square root of 555344666 is about 23565.7519718765. The cubic root of 555344666 is about 821.9666586051.

The spelling of 555344666 in words is "five hundred fifty-five million, three hundred forty-four thousand, six hundred sixty-six".