506683663 has 4 divisors (see below), whose sum is σ = 518467048. Its totient is φ = 494900280.

The previous prime is 506683637. The next prime is 506683753. The reversal of 506683663 is 366386605.

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

It is a cyclic number.

It is not a de Polignac number, because 506683663 - 2¹³ = 506675471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 11783341 = 506683663 / (5 + 0 + 6 + 6 + 8 + 3 + 6 + 6 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506683613) 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, 5891628 + ... + 5891713.

It is an arithmetic number, because the mean of its divisors is an integer number (129616762).

Almost surely, 2^506683663 is an apocalyptic number.

506683663 is a deficient number, since it is larger than the sum of its proper divisors (11783385).

506683663 is a wasteful number, since it uses less digits than its factorization.

506683663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11783384.

The product of its (nonzero) digits is 466560, while the sum is 43.

The square root of 506683663 is about 22509.6348926410. The cubic root of 506683663 is about 797.2214351235.

The spelling of 506683663 in words is "five hundred six million, six hundred eighty-three thousand, six hundred sixty-three".