6765670381 has 2 divisors, whose sum is σ = 6765670382. Its totient is φ = 6765670380.

The previous prime is 6765670343. The next prime is 6765670393. The reversal of 6765670381 is 1830765676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6713180356 + 52490025 = 81934^2 + 7245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6765670381 is a prime.

It is a super-2 number, since 2×6765670381² = 91548591408681370322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6765670481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3382835190 + 3382835191.

It is an arithmetic number, because the mean of its divisors is an integer number (3382835191).

Almost surely, 2^6765670381 is an apocalyptic number.

It is an amenable number.

6765670381 is a deficient number, since it is larger than the sum of its proper divisors (1).

6765670381 is an equidigital number, since it uses as much as digits as its factorization.

6765670381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 6765670381 is about 82253.6952422200. The cubic root of 6765670381 is about 1891.3429218181.

The spelling of 6765670381 in words is "six billion, seven hundred sixty-five million, six hundred seventy thousand, three hundred eighty-one".