528680745 has 12 divisors (see below), whose sum is σ = 916380036. Its totient is φ = 281963040.

The previous prime is 528680741. The next prime is 528680767. The reversal of 528680745 is 547086825.

528680745 is a `hidden beast` number, since 528 + 6 + 80 + 7 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 199911321 + 328769424 = 14139^2 + 18132^2 .

It is not a de Polignac number, because 528680745 - 2² = 528680741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 11748461 = 528680745 / (5 + 2 + 8 + 6 + 8 + 0 + 7 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 528680745.

It is not an unprimeable number, because it can be changed into a prime (528680741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5874186 + ... + 5874275.

It is an arithmetic number, because the mean of its divisors is an integer number (76365003).

Almost surely, 2^528680745 is an apocalyptic number.

It is an amenable number.

528680745 is a deficient number, since it is larger than the sum of its proper divisors (387699291).

528680745 is a wasteful number, since it uses less digits than its factorization.

528680745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11748472 (or 11748469 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 528680745 is about 22993.0586264638. The cubic root of 528680745 is about 808.5952102459.

The spelling of 528680745 in words is "five hundred twenty-eight million, six hundred eighty thousand, seven hundred forty-five".