520668 has 30 divisors (see below), whose sum is σ = 1361976. Its totient is φ = 173448.

The previous prime is 520649. The next prime is 520679. The reversal of 520668 is 866025.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 480 + ... + 1127.

2⁵²⁰⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

520668 is an abundant number, since it is smaller than the sum of its proper divisors (841308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520668 is a wasteful number, since it uses less digits than its factorization.

520668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 520668 is about 721.5732811018. The cubic root of 520668 is about 80.4489343453.

The spelling of 520668 in words is "five hundred twenty thousand, six hundred sixty-eight".