513686 has 8 divisors (see below), whose sum is σ = 778464. Its totient is φ = 254200.

The previous prime is 513683. The next prime is 513691. The reversal of 513686 is 686315.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 513686.

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 3 ways as a sum of consecutive naturals, for example, 1070 + ... + 1473.

It is an arithmetic number, because the mean of its divisors is an integer number (97308).

2⁵¹³⁶⁸⁶ is an apocalyptic number.

513686 is a deficient number, since it is larger than the sum of its proper divisors (264778).

513686 is a wasteful number, since it uses less digits than its factorization.

513686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646.

The product of its digits is 4320, while the sum is 29.

The square root of 513686 is about 716.7189128243. The cubic root of 513686 is about 80.0877162880.

The spelling of 513686 in words is "five hundred thirteen thousand, six hundred eighty-six".