8045602821 has 12 divisors (see below), whose sum is σ = 11630991372. Its totient is φ = 5359320576.

The previous prime is 8045602813. The next prime is 8045602841. The reversal of 8045602821 is 1282065408.

8045602821 is a `hidden beast` number, since 8 + 0 + 45 + 602 + 8 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4166057025 + 3879545796 = 64545^2 + 62286^2 .

It is not a de Polignac number, because 8045602821 - 2³ = 8045602813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8045602841) 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, 356326 + ... + 378231.

It is an arithmetic number, because the mean of its divisors is an integer number (969249281).

Almost surely, 2^8045602821 is an apocalyptic number.

It is an amenable number.

8045602821 is a deficient number, since it is larger than the sum of its proper divisors (3585388551).

8045602821 is a wasteful number, since it uses less digits than its factorization.

8045602821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735780 (or 735777 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 8045602821 is about 89697.2843568856. The cubic root of 8045602821 is about 2003.7930369710.

The spelling of 8045602821 in words is "eight billion, forty-five million, six hundred two thousand, eight hundred twenty-one".