520016664 has 32 divisors (see below), whose sum is σ = 1300601520. Its totient is φ = 173264256.

The previous prime is 520016657. The next prime is 520016677. The reversal of 520016664 is 466610025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102082 + ... + 107054.

Almost surely, 2^520016664 is an apocalyptic number.

It is an amenable number.

520016664 is an abundant number, since it is smaller than the sum of its proper divisors (780584856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520016664 is a wasteful number, since it uses less digits than its factorization.

520016664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9339 (or 9335 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 520016664 is about 22803.8738814264. The cubic root of 520016664 is about 804.1537415458.

Adding to 520016664 its reverse (466610025), we get a palindrome (986626689).

The spelling of 520016664 in words is "five hundred twenty million, sixteen thousand, six hundred sixty-four".