513685 has 8 divisors (see below), whose sum is σ = 625536. Its totient is φ = 404880.

The previous prime is 513683. The next prime is 513691. The reversal of 513685 is 586315.

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

It is not a de Polignac number, because 513685 - 2¹ = 513683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513683) 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, 369 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (78192).

2⁵¹³⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

513685 is a deficient number, since it is larger than the sum of its proper divisors (111851).

513685 is a wasteful number, since it uses less digits than its factorization.

513685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523.

The product of its digits is 3600, while the sum is 28.

The square root of 513685 is about 716.7182152004. The cubic root of 513685 is about 80.0876643187.

The spelling of 513685 in words is "five hundred thirteen thousand, six hundred eighty-five".