505660306 has 16 divisors (see below), whose sum is σ = 776891808. Its totient is φ = 246708000.

The previous prime is 505660303. The next prime is 505660381. The reversal of 505660306 is 603066505.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (505660301) 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, 111381 + ... + 115831.

It is an arithmetic number, because the mean of its divisors is an integer number (48555738).

Almost surely, 2^505660306 is an apocalyptic number.

505660306 is a deficient number, since it is larger than the sum of its proper divisors (271231502).

505660306 is a wasteful number, since it uses less digits than its factorization.

505660306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5817.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 505660306 is about 22486.8918705987. The cubic root of 505660306 is about 796.6843531337.

The spelling of 505660306 in words is "five hundred five million, six hundred sixty thousand, three hundred six".