538685 has 8 divisors (see below), whose sum is σ = 738816. Its totient is φ = 369360.

The previous prime is 538651. The next prime is 538697. The reversal of 538685 is 586835.

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

It is not a de Polignac number, because 538685 - 2⁶ = 538621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 15391 = 538685 / (5 + 3 + 8 + 6 + 8 + 5).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7661 + ... + 7730.

It is an arithmetic number, because the mean of its divisors is an integer number (92352).

2⁵³⁸⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

538685 is a deficient number, since it is larger than the sum of its proper divisors (200131).

538685 is a wasteful number, since it uses less digits than its factorization.

538685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15403.

The product of its digits is 28800, while the sum is 35.

The square root of 538685 is about 733.9516332838. The cubic root of 538685 is about 81.3663736733.

The spelling of 538685 in words is "five hundred thirty-eight thousand, six hundred eighty-five".