515650664 has 16 divisors (see below), whose sum is σ = 1023718500. Its totient is φ = 242659072.

The previous prime is 515650661. The next prime is 515650691. The reversal of 515650664 is 466056515.

It can be written as a sum of positive squares in 2 ways, for example, as 503104900 + 12545764 = 22430^2 + 3542^2 .

It is not an unprimeable number, because it can be changed into a prime (515650661) 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, 1895639 + ... + 1895910.

Almost surely, 2^515650664 is an apocalyptic number.

It is an amenable number.

515650664 is a deficient number, since it is larger than the sum of its proper divisors (508067836).

515650664 is a wasteful number, since it uses less digits than its factorization.

515650664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3791572 (or 3791568 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 515650664 is about 22707.9427513811. The cubic root of 515650664 is about 801.8968862235.

The spelling of 515650664 in words is "five hundred fifteen million, six hundred fifty thousand, six hundred sixty-four".