6827804993 has 4 divisors (see below), whose sum is σ = 6831376068. Its totient is φ = 6824233920.

The previous prime is 6827804987. The next prime is 6827804999. The reversal of 6827804993 is 3994087286.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (6827804987) and next prime (6827804999).

It can be written as a sum of positive squares in 2 ways, for example, as 5980238224 + 847566769 = 77332^2 + 29113^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6827804993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6827804999) 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, 1782668 + ... + 1786493.

It is an arithmetic number, because the mean of its divisors is an integer number (1707844017).

Almost surely, 2^6827804993 is an apocalyptic number.

It is an amenable number.

6827804993 is a deficient number, since it is larger than the sum of its proper divisors (3571075).

6827804993 is a wasteful number, since it uses less digits than its factorization.

6827804993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571074.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The square root of 6827804993 is about 82630.5330552817. The cubic root of 6827804993 is about 1897.1151967772.

The spelling of 6827804993 in words is "six billion, eight hundred twenty-seven million, eight hundred four thousand, nine hundred ninety-three".