5556618 has 12 divisors (see below), whose sum is σ = 12039378. Its totient is φ = 1852200.

The previous prime is 5556559. The next prime is 5556619. The reversal of 5556618 is 8166555.

It can be written as a sum of positive squares in only one way, i.e., 3038049 + 2518569 = 1743^2 + 1587^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5556619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 154333 + ... + 154368.

Almost surely, 2^5556618 is an apocalyptic number.

5556618 is an abundant number, since it is smaller than the sum of its proper divisors (6482760).

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

5556618 is a wasteful number, since it uses less digits than its factorization.

5556618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308709 (or 308706 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 5556618 is about 2357.2479716822. The cubic root of 5556618 is about 177.1210509677.

The spelling of 5556618 in words is "five million, five hundred fifty-six thousand, six hundred eighteen".