520654 has 8 divisors (see below), whose sum is σ = 784080. Its totient is φ = 259296.

The previous prime is 520649. The next prime is 520679. The reversal of 520654 is 456025.

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

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 3 ways as a sum of consecutive naturals, for example, 582 + ... + 1174.

It is an arithmetic number, because the mean of its divisors is an integer number (98010).

2⁵²⁰⁶⁵⁴ is an apocalyptic number.

520654 is a deficient number, since it is larger than the sum of its proper divisors (263426).

520654 is a wasteful number, since it uses less digits than its factorization.

520654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 520654 is about 721.5635800122. The cubic root of 520654 is about 80.4482132875.

Adding to 520654 its reverse (456025), we get a palindrome (976679).

The spelling of 520654 in words is "five hundred twenty thousand, six hundred fifty-four".