536666 has 8 divisors (see below), whose sum is σ = 866964. Its totient is φ = 247680.

The previous prime is 536651. The next prime is 536671. The reversal of 536666 is 666635.

It can be written as a sum of positive squares in 2 ways, for example, as 461041 + 75625 = 679^2 + 275^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

536666 is a modest number, since divided by 666 gives 536 as remainder.

It is an unprimeable number.

536666 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10295 + ... + 10346.

2⁵³⁶⁶⁶⁶ is an apocalyptic number.

536666 is a deficient number, since it is larger than the sum of its proper divisors (330298).

536666 is a wasteful number, since it uses less digits than its factorization.

536666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20656.

The product of its digits is 19440, while the sum is 32.

The square root of 536666 is about 732.5749108453. The cubic root of 536666 is about 81.2645922509.

The spelling of 536666 in words is "five hundred thirty-six thousand, six hundred sixty-six".