513396861 has 8 divisors (see below), whose sum is σ = 685936704. Its totient is φ = 341560800.

The previous prime is 513396833. The next prime is 513396883. The reversal of 513396861 is 168693315.

It is a happy number.

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

It is not a de Polignac number, because 513396861 - 2⁷ = 513396733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513396061) 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, 174240 + ... + 177161.

It is an arithmetic number, because the mean of its divisors is an integer number (85742088).

Almost surely, 2^513396861 is an apocalyptic number.

It is an amenable number.

513396861 is a deficient number, since it is larger than the sum of its proper divisors (172539843).

513396861 is a wasteful number, since it uses less digits than its factorization.

513396861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351891.

The product of its digits is 116640, while the sum is 42.

The square root of 513396861 is about 22658.2625326833. The cubic root of 513396861 is about 800.7268711437.

The spelling of 513396861 in words is "five hundred thirteen million, three hundred ninety-six thousand, eight hundred sixty-one".