506666901 has 48 divisors (see below), whose sum is σ = 777384000. Its totient is φ = 292571136.

The previous prime is 506666899. The next prime is 506666903. The reversal of 506666901 is 109666605.

It is an interprime number because it is at equal distance from previous prime (506666899) and next prime (506666903).

It is not a de Polignac number, because 506666901 - 2¹ = 506666899 is a prime.

It is a super-2 number, since 2×506666901² = 513422697137887602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 506666901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506666903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1435141 + ... + 1435493.

It is an arithmetic number, because the mean of its divisors is an integer number (16195500).

Almost surely, 2^506666901 is an apocalyptic number.

It is an amenable number.

506666901 is a deficient number, since it is larger than the sum of its proper divisors (270717099).

506666901 is a wasteful number, since it uses less digits than its factorization.

506666901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 506666901 is about 22509.2625601107. The cubic root of 506666901 is about 797.2126438571.

The spelling of 506666901 in words is "five hundred six million, six hundred sixty-six thousand, nine hundred one".