5662666 has 24 divisors (see below), whose sum is σ = 9206316. Its totient is φ = 2611200.

The previous prime is 5662663. The next prime is 5662681. The reversal of 5662666 is 6662665.

5662666 = T₃₃ + T₃₄ + ... + T₃₂₃.

It can be written as a sum of positive squares in 6 ways, for example, as 5387041 + 275625 = 2321^2 + 525^2 .

It is not an unprimeable number, because it can be changed into a prime (5662663) 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 11 ways as a sum of consecutive naturals, for example, 56016 + ... + 56116.

Almost surely, 2^5662666 is an apocalyptic number.

5662666 is a deficient number, since it is larger than the sum of its proper divisors (3543650).

5662666 is a wasteful number, since it uses less digits than its factorization.

5662666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 217 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 5662666 is about 2379.6356864024. The cubic root of 5662666 is about 178.2407422999.

Subtracting 5662666 from its reverse (6662665), we obtain a palindrome (999999).

It can be divided in two parts, 5662 and 666, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 5662666 in words is "five million, six hundred sixty-two thousand, six hundred sixty-six".