506420066 has 16 divisors (see below), whose sum is σ = 764515584. Its totient is φ = 251586384.

The previous prime is 506420059. The next prime is 506420077. The reversal of 506420066 is 660024605.

It is a super-2 number, since 2×506420066² = 512922566494888712, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 368156 + ... + 369528.

It is an arithmetic number, because the mean of its divisors is an integer number (47782224).

Almost surely, 2^506420066 is an apocalyptic number.

506420066 is a deficient number, since it is larger than the sum of its proper divisors (258095518).

506420066 is a wasteful number, since it uses less digits than its factorization.

506420066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 506420066 is about 22503.7789271047. The cubic root of 506420066 is about 797.0831623730.

The spelling of 506420066 in words is "five hundred six million, four hundred twenty thousand, sixty-six".