5378666 has 4 divisors (see below), whose sum is σ = 8068002. Its totient is φ = 2689332.

The previous prime is 5378657. The next prime is 5378669. The reversal of 5378666 is 6668735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4515625 + 863041 = 2125^2 + 929^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5378669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344665 + ... + 1344668.

Almost surely, 2^5378666 is an apocalyptic number.

5378666 is a deficient number, since it is larger than the sum of its proper divisors (2689336).

5378666 is a wasteful number, since it uses less digits than its factorization.

5378666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689335.

The product of its digits is 181440, while the sum is 41.

The square root of 5378666 is about 2319.1951190014. The cubic root of 5378666 is about 175.2097186424.

The spelling of 5378666 in words is "five million, three hundred seventy-eight thousand, six hundred sixty-six".