5815666 has 8 divisors (see below), whose sum is σ = 9236700. Its totient is φ = 2736768.

The previous prime is 5815661. The next prime is 5815687. The reversal of 5815666 is 6665185.

It can be written as a sum of positive squares in 2 ways, for example, as 5659641 + 156025 = 2379^2 + 395^2 .

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 (5815661) 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, 85491 + ... + 85558.

Almost surely, 2^5815666 is an apocalyptic number.

5815666 is a deficient number, since it is larger than the sum of its proper divisors (3421034).

5815666 is a wasteful number, since it uses less digits than its factorization.

5815666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171068.

The product of its digits is 43200, while the sum is 37.

The square root of 5815666 is about 2411.5691986754. The cubic root of 5815666 is about 179.8317976034.

The spelling of 5815666 in words is "five million, eight hundred fifteen thousand, six hundred sixty-six".