828243663 has 16 divisors (see below), whose sum is σ = 1204331520. Its totient is φ = 503234784.

The previous prime is 828243617. The next prime is 828243677. The reversal of 828243663 is 366342828.

It is not a de Polignac number, because 828243663 - 2¹² = 828239567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828243263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131331 + ... + 137492.

It is an arithmetic number, because the mean of its divisors is an integer number (75270720).

Almost surely, 2^828243663 is an apocalyptic number.

828243663 is a deficient number, since it is larger than the sum of its proper divisors (376087857).

828243663 is a wasteful number, since it uses less digits than its factorization.

828243663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268918.

The product of its digits is 331776, while the sum is 42.

The square root of 828243663 is about 28779.2227657385. Note that the first 3 decimals coincide. The cubic root of 828243663 is about 939.1162899614.

The spelling of 828243663 in words is "eight hundred twenty-eight million, two hundred forty-three thousand, six hundred sixty-three".