828645 has 8 divisors (see below), whose sum is σ = 1325856. Its totient is φ = 441936.

The previous prime is 828643. The next prime is 828649. The reversal of 828645 is 546828.

828645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 828645 - 2¹ = 828643 is a prime.

828645 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828643) 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, 27607 + ... + 27636.

It is an arithmetic number, because the mean of its divisors is an integer number (165732).

2⁸²⁸⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

828645 is a deficient number, since it is larger than the sum of its proper divisors (497211).

828645 is a wasteful number, since it uses less digits than its factorization.

828645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55251.

The product of its digits is 15360, while the sum is 33.

The square root of 828645 is about 910.2994012961. The cubic root of 828645 is about 93.9267952759.

The spelling of 828645 in words is "eight hundred twenty-eight thousand, six hundred forty-five".