520673 has 4 divisors (see below), whose sum is σ = 522240. Its totient is φ = 519108.

The previous prime is 520649. The next prime is 520679. The reversal of 520673 is 376025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520673 - 2⁶ = 520609 is a prime.

It is a super-2 number, since 2×520673² = 542200745858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520679) 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, 65 + ... + 1022.

It is an arithmetic number, because the mean of its divisors is an integer number (130560).

2⁵²⁰⁶⁷³ is an apocalyptic number.

It is an amenable number.

520673 is a deficient number, since it is larger than the sum of its proper divisors (1567).

520673 is a wasteful number, since it uses less digits than its factorization.

520673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 520673 is about 721.5767457450. The cubic root of 520673 is about 80.4491918628.

Adding to 520673 its reverse (376025), we get a palindrome (896698).

The spelling of 520673 in words is "five hundred twenty thousand, six hundred seventy-three".