5556666 has 8 divisors (see below), whose sum is σ = 11113344. Its totient is φ = 1852220.

The previous prime is 5556659. The next prime is 5556667. The reversal of 5556666 is 6666555.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

5556666 is an admirable number.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (5556667) 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, 463050 + ... + 463061.

It is an arithmetic number, because the mean of its divisors is an integer number (1389168).

Almost surely, 2^5556666 is an apocalyptic number.

5556666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

5556666 is a wasteful number, since it uses less digits than its factorization.

5556666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926116.

The product of its digits is 162000, while the sum is 39.

The square root of 5556666 is about 2357.2581530244. The cubic root of 5556666 is about 177.1215609774.

The spelling of 5556666 in words is "five million, five hundred fifty-six thousand, six hundred sixty-six".