538765 has 8 divisors (see below), whose sum is σ = 650520. Its totient is φ = 428352.

The previous prime is 538763. The next prime is 538771. The reversal of 538765 is 567835.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9 + 538756 = 3^2 + 734^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 538765 - 2¹ = 538763 is a prime.

538765 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 538765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538763) 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, 1191 + ... + 1579.

It is an arithmetic number, because the mean of its divisors is an integer number (81315).

2⁵³⁸⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

538765 is a deficient number, since it is larger than the sum of its proper divisors (111755).

538765 is a wasteful number, since it uses less digits than its factorization.

538765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671.

The product of its digits is 25200, while the sum is 34.

The square root of 538765 is about 734.0061307646. The cubic root of 538765 is about 81.3704013752.

The spelling of 538765 in words is "five hundred thirty-eight thousand, seven hundred sixty-five".