6786830993 has 2 divisors, whose sum is σ = 6786830994. Its totient is φ = 6786830992.

The previous prime is 6786830959. The next prime is 6786831013. The reversal of 6786830993 is 3990386876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4898320144 + 1888510849 = 69988^2 + 43457^2 .

It is a cyclic number.

It is not a de Polignac number, because 6786830993 - 2¹⁴ = 6786814609 is a prime.

It is a super-2 number, since 2×6786830993² = 92122149855090732098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6786830693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3393415496 + 3393415497.

It is an arithmetic number, because the mean of its divisors is an integer number (3393415497).

Almost surely, 2^6786830993 is an apocalyptic number.

It is an amenable number.

6786830993 is a deficient number, since it is larger than the sum of its proper divisors (1).

6786830993 is an equidigital number, since it uses as much as digits as its factorization.

6786830993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The square root of 6786830993 is about 82382.2249820919. The cubic root of 6786830993 is about 1893.3126857877.

The spelling of 6786830993 in words is "six billion, seven hundred eighty-six million, eight hundred thirty thousand, nine hundred ninety-three".