555066623 has 4 divisors (see below), whose sum is σ = 555612360. Its totient is φ = 554520888.

The previous prime is 555066601. The next prime is 555066667. The reversal of 555066623 is 326660555.

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

It is a cyclic number.

It is not a de Polignac number, because 555066623 - 2⁶ = 555066559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555062623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271340 + ... + 273377.

It is an arithmetic number, because the mean of its divisors is an integer number (138903090).

Almost surely, 2^555066623 is an apocalyptic number.

555066623 is a deficient number, since it is larger than the sum of its proper divisors (545737).

555066623 is a wasteful number, since it uses less digits than its factorization.

555066623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545736.

The product of its (nonzero) digits is 162000, while the sum is 38.

The square root of 555066623 is about 23559.8519307741. The cubic root of 555066623 is about 821.8294583872.

The spelling of 555066623 in words is "five hundred fifty-five million, sixty-six thousand, six hundred twenty-three".