6276066781 has 2 divisors, whose sum is σ = 6276066782. Its totient is φ = 6276066780.

The previous prime is 6276066737. The next prime is 6276066791. The reversal of 6276066781 is 1876606726.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4776053881 + 1500012900 = 69109^2 + 38730^2 .

It is a cyclic number.

It is not a de Polignac number, because 6276066781 - 2¹¹ = 6276064733 is a prime.

It is a super-2 number, since 2×6276066781² = 78778028479143403922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6276066791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3138033390 + 3138033391.

It is an arithmetic number, because the mean of its divisors is an integer number (3138033391).

Almost surely, 2^6276066781 is an apocalyptic number.

It is an amenable number.

6276066781 is a deficient number, since it is larger than the sum of its proper divisors (1).

6276066781 is an equidigital number, since it uses as much as digits as its factorization.

6276066781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 6276066781 is about 79221.6307645835. The cubic root of 6276066781 is about 1844.5730198790.

The spelling of 6276066781 in words is "six billion, two hundred seventy-six million, sixty-six thousand, seven hundred eighty-one".