520666797 has 32 divisors (see below), whose sum is σ = 812032000. Its totient is φ = 296627184.

The previous prime is 520666777. The next prime is 520666807. The reversal of 520666797 is 797666025.

It is not a de Polignac number, because 520666797 - 2¹⁰ = 520665773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520666777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 500604 + ... + 501642.

It is an arithmetic number, because the mean of its divisors is an integer number (25376000).

Almost surely, 2^520666797 is an apocalyptic number.

It is an amenable number.

520666797 is a deficient number, since it is larger than the sum of its proper divisors (291365203).

520666797 is a wasteful number, since it uses less digits than its factorization.

520666797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 1536 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 48.

The square root of 520666797 is about 22818.1243094168. The cubic root of 520666797 is about 804.4887238634.

The spelling of 520666797 in words is "five hundred twenty million, six hundred sixty-six thousand, seven hundred ninety-seven".