506665105 has 8 divisors (see below), whose sum is σ = 608179752. Its totient is φ = 405211008.

The previous prime is 506665097. The next prime is 506665111. The reversal of 506665105 is 501566605.

It can be written as a sum of positive squares in 4 ways, for example, as 60652944 + 446012161 = 7788^2 + 21119^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 506665105 - 2³ = 506665097 is a prime.

It is a super-2 number, since 2×506665105² = 513419057249322050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5947 + ... + 32383.

It is an arithmetic number, because the mean of its divisors is an integer number (76022469).

Almost surely, 2^506665105 is an apocalyptic number.

It is an amenable number.

506665105 is a deficient number, since it is larger than the sum of its proper divisors (101514647).

506665105 is a wasteful number, since it uses less digits than its factorization.

506665105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30275.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 506665105 is about 22509.2226653876. Note that the first 3 decimals coincide. The cubic root of 506665105 is about 797.2117018868.

The spelling of 506665105 in words is "five hundred six million, six hundred sixty-five thousand, one hundred five".