5405666 has 8 divisors (see below), whose sum is σ = 9266880. Its totient is φ = 2316708.

The previous prime is 5405641. The next prime is 5405669. The reversal of 5405666 is 6665045.

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

It is not an unprimeable number, because it can be changed into a prime (5405669) 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 3 ways as a sum of consecutive naturals, for example, 193046 + ... + 193073.

It is an arithmetic number, because the mean of its divisors is an integer number (1158360).

Almost surely, 2^5405666 is an apocalyptic number.

5405666 is a deficient number, since it is larger than the sum of its proper divisors (3861214).

5405666 is a wasteful number, since it uses less digits than its factorization.

5405666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386128.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 5405666 is about 2325.0088171876. The cubic root of 5405666 is about 175.5024038978.

The spelling of 5405666 in words is "five million, four hundred five thousand, six hundred sixty-six".