6690093841 has 2 divisors, whose sum is σ = 6690093842. Its totient is φ = 6690093840.

The previous prime is 6690093757. The next prime is 6690093859. The reversal of 6690093841 is 1483900966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4970250000 + 1719843841 = 70500^2 + 41471^2 .

It is a cyclic number.

It is not a de Polignac number, because 6690093841 - 2⁷ = 6690093713 is a prime.

It is a super-2 number, since 2×6690093841² = 89514711202772266562, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6690093791 and 6690093800.

It is not a weakly prime, because it can be changed into another prime (6690093941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345046920 + 3345046921.

It is an arithmetic number, because the mean of its divisors is an integer number (3345046921).

Almost surely, 2^6690093841 is an apocalyptic number.

It is an amenable number.

6690093841 is a deficient number, since it is larger than the sum of its proper divisors (1).

6690093841 is an equidigital number, since it uses as much as digits as its factorization.

6690093841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 6690093841 is about 81792.9938381033. The cubic root of 6690093841 is about 1884.2740619462.

The spelling of 6690093841 in words is "six billion, six hundred ninety million, ninety-three thousand, eight hundred forty-one".