513966566 has 8 divisors (see below), whose sum is σ = 771501240. Its totient is φ = 256799488.

The previous prime is 513966517. The next prime is 513966569. The reversal of 513966566 is 665669315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 513966566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513966569) 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, 88376 + ... + 94011.

It is an arithmetic number, because the mean of its divisors is an integer number (96437655).

Almost surely, 2^513966566 is an apocalyptic number.

513966566 is a deficient number, since it is larger than the sum of its proper divisors (257534674).

513966566 is a wasteful number, since it uses less digits than its factorization.

513966566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183798.

The product of its digits is 874800, while the sum is 47.

The square root of 513966566 is about 22670.8307302578. The cubic root of 513966566 is about 801.0229445481.

The spelling of 513966566 in words is "five hundred thirteen million, nine hundred sixty-six thousand, five hundred sixty-six".