505388667 has 8 divisors (see below), whose sum is σ = 770116096. Its totient is φ = 288793512.

The previous prime is 505388647. The next prime is 505388669. The reversal of 505388667 is 766883505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505388667 - 2¹² = 505384571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505388669) 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, 12033043 + ... + 12033084.

It is an arithmetic number, because the mean of its divisors is an integer number (96264512).

Almost surely, 2^505388667 is an apocalyptic number.

505388667 is a deficient number, since it is larger than the sum of its proper divisors (264727429).

505388667 is a wasteful number, since it uses less digits than its factorization.

505388667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24066137.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 505388667 is about 22480.8511182295. The cubic root of 505388667 is about 796.5416688707.

The spelling of 505388667 in words is "five hundred five million, three hundred eighty-eight thousand, six hundred sixty-seven".