515506066 has 16 divisors (see below), whose sum is σ = 780042240. Its totient is φ = 255497760.

The previous prime is 515506063. The next prime is 515506087. The reversal of 515506066 is 660605515.

It is not an unprimeable number, because it can be changed into a prime (515506063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349711 + ... + 351181.

It is an arithmetic number, because the mean of its divisors is an integer number (48752640).

Almost surely, 2^515506066 is an apocalyptic number.

515506066 is a deficient number, since it is larger than the sum of its proper divisors (264536174).

515506066 is a wasteful number, since it uses less digits than its factorization.

515506066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889.

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

The square root of 515506066 is about 22704.7586642096. The cubic root of 515506066 is about 801.8219236347.

The spelling of 515506066 in words is "five hundred fifteen million, five hundred six thousand, sixty-six".