513065823 has 8 divisors (see below), whose sum is σ = 689310336. Its totient is φ = 339432600.

The previous prime is 513065821. The next prime is 513065843. The reversal of 513065823 is 328560315.

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

It is not a de Polignac number, because 513065823 - 2¹ = 513065821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513065821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652363 + ... + 653148.

It is an arithmetic number, because the mean of its divisors is an integer number (86163792).

Almost surely, 2^513065823 is an apocalyptic number.

513065823 is a deficient number, since it is larger than the sum of its proper divisors (176244513).

513065823 is a wasteful number, since it uses less digits than its factorization.

513065823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305645.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 513065823 is about 22650.9563374265. The cubic root of 513065823 is about 800.5547313983.

The spelling of 513065823 in words is "five hundred thirteen million, sixty-five thousand, eight hundred twenty-three".