828633797 has 4 divisors (see below), whose sum is σ = 828928716. Its totient is φ = 828338880.

The previous prime is 828633761. The next prime is 828633803. The reversal of 828633797 is 797336828.

It is a happy number.

It is a Cunningham number, because it is equal to 28786²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28366276 + 800267521 = 5326^2 + 28289^2 .

It is a cyclic number.

It is not a de Polignac number, because 828633797 - 2²⁸ = 560198341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828633097) 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, 143204 + ... + 148877.

It is an arithmetic number, because the mean of its divisors is an integer number (207232179).

Almost surely, 2^828633797 is an apocalyptic number.

It is an amenable number.

828633797 is a deficient number, since it is larger than the sum of its proper divisors (294919).

828633797 is a wasteful number, since it uses less digits than its factorization.

828633797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294918.

The product of its digits is 3048192, while the sum is 53.

The square root of 828633797 is about 28786.0000173696. Note that the first 4 decimals coincide. The cubic root of 828633797 is about 939.2637198783.

The spelling of 828633797 in words is "eight hundred twenty-eight million, six hundred thirty-three thousand, seven hundred ninety-seven".