513668869 has 8 divisors (see below), whose sum is σ = 601368768. Its totient is φ = 429548640.

The previous prime is 513668863. The next prime is 513668917. The reversal of 513668869 is 968866315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513668869 is a prime.

It is a super-2 number, since 2×513668869² = 527711413959478322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513668863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 894607 + ... + 895180.

It is an arithmetic number, because the mean of its divisors is an integer number (75171096).

Almost surely, 2^513668869 is an apocalyptic number.

It is an amenable number.

513668869 is a deficient number, since it is larger than the sum of its proper divisors (87699899).

513668869 is a wasteful number, since it uses less digits than its factorization.

513668869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789835.

The product of its digits is 1866240, while the sum is 52.

The square root of 513668869 is about 22664.2641398304. The cubic root of 513668869 is about 800.8682599191.

The spelling of 513668869 in words is "five hundred thirteen million, six hundred sixty-eight thousand, eight hundred sixty-nine".