6776769997 has 2 divisors, whose sum is σ = 6776769998. Its totient is φ = 6776769996.

The previous prime is 6776769983. The next prime is 6776770001. The reversal of 6776769997 is 7999676776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6371392041 + 405377956 = 79821^2 + 20134^2 .

It is a cyclic number.

It is not a de Polignac number, because 6776769997 - 2⁷ = 6776769869 is a prime.

It is a super-2 number, since 2×6776769997² = 91849223184478760018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6776769917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3388384998 + 3388384999.

It is an arithmetic number, because the mean of its divisors is an integer number (3388384999).

Almost surely, 2^6776769997 is an apocalyptic number.

It is an amenable number.

6776769997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6776769997 is an equidigital number, since it uses as much as digits as its factorization.

6776769997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378071064, while the sum is 73.

The square root of 6776769997 is about 82321.1394296750. The cubic root of 6776769997 is about 1892.3766558067.

The spelling of 6776769997 in words is "six billion, seven hundred seventy-six million, seven hundred sixty-nine thousand, nine hundred ninety-seven".