505312667 has 4 divisors (see below), whose sum is σ = 505372320. Its totient is φ = 505253016.

The previous prime is 505312601. The next prime is 505312693. The reversal of 505312667 is 766213505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 505312667 - 2⁸ = 505312411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505312697) 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, 14492 + ... + 34937.

It is an arithmetic number, because the mean of its divisors is an integer number (126343080).

Almost surely, 2^505312667 is an apocalyptic number.

505312667 is a deficient number, since it is larger than the sum of its proper divisors (59653).

505312667 is a wasteful number, since it uses less digits than its factorization.

505312667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59652.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 505312667 is about 22479.1607272158. The cubic root of 505312667 is about 796.5017390731.

The spelling of 505312667 in words is "five hundred five million, three hundred twelve thousand, six hundred sixty-seven".