506869478 has 4 divisors (see below), whose sum is σ = 760304220. Its totient is φ = 253434738.

The previous prime is 506869459. The next prime is 506869487. The reversal of 506869478 is 874968605.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126717368 + ... + 126717371.

It is an arithmetic number, because the mean of its divisors is an integer number (190076055).

Almost surely, 2^506869478 is an apocalyptic number.

506869478 is a deficient number, since it is larger than the sum of its proper divisors (253434742).

506869478 is a wasteful number, since it uses less digits than its factorization.

506869478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253434741.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The square root of 506869478 is about 22513.7619690713. The cubic root of 506869478 is about 797.3188776417.

The spelling of 506869478 in words is "five hundred six million, eight hundred sixty-nine thousand, four hundred seventy-eight".