538786 has 4 divisors (see below), whose sum is σ = 808182. Its totient is φ = 269392.

The previous prime is 538777. The next prime is 538789. The reversal of 538786 is 687835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 687835 = 5 ⋅137567.

It can be written as a sum of positive squares in only one way, i.e., 398161 + 140625 = 631^2 + 375^2 .

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (538789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134695 + ... + 134698.

2⁵³⁸⁷⁸⁶ is an apocalyptic number.

538786 is a deficient number, since it is larger than the sum of its proper divisors (269396).

538786 is a wasteful number, since it uses less digits than its factorization.

538786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269395.

The product of its digits is 40320, while the sum is 37.

The square root of 538786 is about 734.0204356828. The cubic root of 538786 is about 81.3714585808.

The spelling of 538786 in words is "five hundred thirty-eight thousand, seven hundred eighty-six".