5667666 has 16 divisors (see below), whose sum is σ = 11373024. Its totient is φ = 1882944.

The previous prime is 5667631. The next prime is 5667667. The reversal of 5667666 is 6667665.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5667667) 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 in 7 ways as a sum of consecutive naturals, for example, 621 + ... + 3423.

It is an arithmetic number, because the mean of its divisors is an integer number (710814).

Almost surely, 2^5667666 is an apocalyptic number.

5667666 is an abundant number, since it is smaller than the sum of its proper divisors (5705358).

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

5667666 is a wasteful number, since it uses less digits than its factorization.

5667666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145.

The product of its digits is 272160, while the sum is 42.

The square root of 5667666 is about 2380.6860355788. The cubic root of 5667666 is about 178.2931876519.

Subtracting 5667666 from its reverse (6667665), we obtain a palindrome (999999).

The spelling of 5667666 in words is "five million, six hundred sixty-seven thousand, six hundred sixty-six".