6781097 has 2 divisors, whose sum is σ = 6781098. Its totient is φ = 6781096.

The previous prime is 6781091. The next prime is 6781109. The reversal of 6781097 is 7901876.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5331481 + 1449616 = 2309^2 + 1204^2 .

It is a cyclic number.

It is not a de Polignac number, because 6781097 - 2¹⁰ = 6780073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6781097.

It is not a weakly prime, because it can be changed into another prime (6781091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3390548 + 3390549.

It is an arithmetic number, because the mean of its divisors is an integer number (3390549).

Almost surely, 2^6781097 is an apocalyptic number.

It is an amenable number.

6781097 is a deficient number, since it is larger than the sum of its proper divisors (1).

6781097 is an equidigital number, since it uses as much as digits as its factorization.

6781097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 6781097 is about 2604.0539548942. The cubic root of 6781097 is about 189.2779334237.

The spelling of 6781097 in words is "six million, seven hundred eighty-one thousand, ninety-seven".