5018666 has 4 divisors (see below), whose sum is σ = 7528002. Its totient is φ = 2509332.

The previous prime is 5018647. The next prime is 5018693. The reversal of 5018666 is 6668105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6668105 = 5 ⋅1333621.

It can be written as a sum of positive squares in only one way, i.e., 4060225 + 958441 = 2015^2 + 979^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254665 + ... + 1254668.

Almost surely, 2^5018666 is an apocalyptic number.

5018666 is a deficient number, since it is larger than the sum of its proper divisors (2509336).

5018666 is a wasteful number, since it uses less digits than its factorization.

5018666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509335.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 5018666 is about 2240.2379337919. The cubic root of 5018666 is about 171.2101198272.

The spelling of 5018666 in words is "five million, eighteen thousand, six hundred sixty-six".