505889727 has 8 divisors (see below), whose sum is σ = 770879616. Its totient is φ = 289079832.

The previous prime is 505889719. The next prime is 505889729. The reversal of 505889727 is 727988505.

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

It is not a de Polignac number, because 505889727 - 2³ = 505889719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505889727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505889729) 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, 12044973 + ... + 12045014.

It is an arithmetic number, because the mean of its divisors is an integer number (96359952).

Almost surely, 2^505889727 is an apocalyptic number.

505889727 is a deficient number, since it is larger than the sum of its proper divisors (264989889).

505889727 is a wasteful number, since it uses less digits than its factorization.

505889727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24089997.

The product of its (nonzero) digits is 1411200, while the sum is 51.

The square root of 505889727 is about 22491.9925084462. The cubic root of 505889727 is about 796.8048216798.

The spelling of 505889727 in words is "five hundred five million, eight hundred eighty-nine thousand, seven hundred twenty-seven".