5421666 has 16 divisors (see below), whose sum is σ = 11217600. Its totient is φ = 1744848.

The previous prime is 5421659. The next prime is 5421667. The reversal of 5421666 is 6661245.

It is not an unprimeable number, because it can be changed into a prime (5421667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15406 + ... + 15753.

It is an arithmetic number, because the mean of its divisors is an integer number (701100).

Almost surely, 2^5421666 is an apocalyptic number.

5421666 is an abundant number, since it is smaller than the sum of its proper divisors (5795934).

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

5421666 is a wasteful number, since it uses less digits than its factorization.

5421666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31193.

The product of its digits is 8640, while the sum is 30.

The square root of 5421666 is about 2328.4471220107. The cubic root of 5421666 is about 175.6753873652.

The spelling of 5421666 in words is "five million, four hundred twenty-one thousand, six hundred sixty-six".