528678689 has 12 divisors (see below), whose sum is σ = 670902768. Its totient is φ = 411957000.

The previous prime is 528678649. The next prime is 528678691. The reversal of 528678689 is 986876825.

It is not a de Polignac number, because 528678689 - 2¹² = 528674593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528678649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 489887 + ... + 490964.

It is an arithmetic number, because the mean of its divisors is an integer number (55908564).

Almost surely, 2^528678689 is an apocalyptic number.

It is an amenable number.

528678689 is a deficient number, since it is larger than the sum of its proper divisors (142224079).

528678689 is a wasteful number, since it uses less digits than its factorization.

528678689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980876 (or 980869 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 59.

The square root of 528678689 is about 22993.0139172750. The cubic root of 528678689 is about 808.5941620557.

The spelling of 528678689 in words is "five hundred twenty-eight million, six hundred seventy-eight thousand, six hundred eighty-nine".