528769 has 4 divisors (see below), whose sum is σ = 530244. Its totient is φ = 527296.

The previous prime is 528763. The next prime is 528779. The reversal of 528769 is 967825.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 237169 + 291600 = 487^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 528769 - 2¹⁷ = 397697 is a prime.

It is a super-2 number, since 2×528769² = 559193310722, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5⁸ + 2¹⁴ + 7⁶ + 8⁴ + 6 + 9 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189 + ... + 1045.

It is an arithmetic number, because the mean of its divisors is an integer number (132561).

2⁵²⁸⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

528769 is a deficient number, since it is larger than the sum of its proper divisors (1475).

528769 is an equidigital number, since it uses as much as digits as its factorization.

528769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474.

The product of its digits is 30240, while the sum is 37.

The square root of 528769 is about 727.1650431642. The cubic root of 528769 is about 80.8640201860.

It can be divided in two parts, 5287 and 69, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 528769 in words is "five hundred twenty-eight thousand, seven hundred sixty-nine".