506666071 has 4 divisors (see below), whose sum is σ = 509067544. Its totient is φ = 504264600.

The previous prime is 506666021. The next prime is 506666087. The reversal of 506666071 is 170666605.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506666071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 506666071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506666021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200420 + ... + 1200841.

It is an arithmetic number, because the mean of its divisors is an integer number (127266886).

Almost surely, 2^506666071 is an apocalyptic number.

506666071 is a deficient number, since it is larger than the sum of its proper divisors (2401473).

506666071 is a wasteful number, since it uses less digits than its factorization.

506666071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401472.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 506666071 is about 22509.2441232486. The cubic root of 506666071 is about 797.2122085370.

The spelling of 506666071 in words is "five hundred six million, six hundred sixty-six thousand, seventy-one".