528647 has 4 divisors (see below), whose sum is σ = 604176. Its totient is φ = 453120.

The previous prime is 528631. The next prime is 528659. The reversal of 528647 is 746825.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 528647 - 2⁴ = 528631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 528647.

It is not an unprimeable number, because it can be changed into a prime (528667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37754 + ... + 37767.

It is an arithmetic number, because the mean of its divisors is an integer number (151044).

2⁵²⁸⁶⁴⁷ is an apocalyptic number.

528647 is a deficient number, since it is larger than the sum of its proper divisors (75529).

528647 is an equidigital number, since it uses as much as digits as its factorization.

528647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75528.

The product of its digits is 13440, while the sum is 32.

The square root of 528647 is about 727.0811509041. The cubic root of 528647 is about 80.8578006022.

The spelling of 528647 in words is "five hundred twenty-eight thousand, six hundred forty-seven".