520606623 has 12 divisors (see below), whose sum is σ = 737377160. Its totient is φ = 326654592.

The previous prime is 520606607. The next prime is 520606649. The reversal of 520606623 is 326606025.

It is not a de Polignac number, because 520606623 - 2⁴ = 520606607 is a prime.

It is a super-2 number, since 2×520606623² = 542062511822928258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520606673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299368 + ... + 301101.

Almost surely, 2^520606623 is an apocalyptic number.

520606623 is a deficient number, since it is larger than the sum of its proper divisors (216770537).

520606623 is a wasteful number, since it uses less digits than its factorization.

520606623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600506 (or 600489 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 520606623 is about 22816.8057142099. The cubic root of 520606623 is about 804.4577308049.

The spelling of 520606623 in words is "five hundred twenty million, six hundred six thousand, six hundred twenty-three".