505687473 has 12 divisors (see below), whose sum is σ = 750179508. Its totient is φ = 328013280.

The previous prime is 505687463. The next prime is 505687487. The reversal of 505687473 is 374786505.

505687473 is a `hidden beast` number, since 50 + 56 + 87 + 473 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 468635904 + 37051569 = 21648^2 + 6087^2 .

It is not a de Polignac number, because 505687473 - 2¹⁰ = 505686449 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (505687463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 758958 + ... + 759623.

It is an arithmetic number, because the mean of its divisors is an integer number (62514959).

Almost surely, 2^505687473 is an apocalyptic number.

It is an amenable number.

505687473 is a deficient number, since it is larger than the sum of its proper divisors (244492035).

505687473 is a wasteful number, since it uses less digits than its factorization.

505687473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518624 (or 1518621 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 505687473 is about 22487.4959255138. The cubic root of 505687473 is about 796.6986203772.

It can be divided in two parts, 5056 and 87473, that added together give a palindrome (92529).

The spelling of 505687473 in words is "five hundred five million, six hundred eighty-seven thousand, four hundred seventy-three".