4987666 has 4 divisors (see below), whose sum is σ = 7481502. Its totient is φ = 2493832.

The previous prime is 4987663. The next prime is 4987667. The reversal of 4987666 is 6667894.

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., 3916441 + 1071225 = 1979^2 + 1035^2 .

It is not an unprimeable number, because it can be changed into a prime (4987663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1246915 + ... + 1246918.

Almost surely, 2^4987666 is an apocalyptic number.

4987666 is a deficient number, since it is larger than the sum of its proper divisors (2493836).

4987666 is a wasteful number, since it uses less digits than its factorization.

4987666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493835.

The product of its digits is 435456, while the sum is 46.

The square root of 4987666 is about 2233.3083083175. The cubic root of 4987666 is about 170.8568732715.

The spelling of 4987666 in words is "four million, nine hundred eighty-seven thousand, six hundred sixty-six".