520989607 has 2 divisors, whose sum is σ = 520989608. Its totient is φ = 520989606.

The previous prime is 520989577. The next prime is 520989683. The reversal of 520989607 is 706989025.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520989607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520909607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260494803 + 260494804.

It is an arithmetic number, because the mean of its divisors is an integer number (260494804).

Almost surely, 2^520989607 is an apocalyptic number.

520989607 is a deficient number, since it is larger than the sum of its proper divisors (1).

520989607 is an equidigital number, since it uses as much as digits as its factorization.

520989607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 520989607 is about 22825.1967570928. The cubic root of 520989607 is about 804.6549487599.

The spelling of 520989607 in words is "five hundred twenty million, nine hundred eighty-nine thousand, six hundred seven".