6767711989 has 2 divisors, whose sum is σ = 6767711990. Its totient is φ = 6767711988.

The previous prime is 6767711939. The next prime is 6767712059. The reversal of 6767711989 is 9891177676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6449696100 + 318015889 = 80310^2 + 17833^2 .

It is a cyclic number.

It is not a de Polignac number, because 6767711989 - 2¹¹ = 6767709941 is a prime.

It is a super-2 number, since 2×6767711989² = 91603851132108672242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6767711939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3383855994 + 3383855995.

It is an arithmetic number, because the mean of its divisors is an integer number (3383855995).

Almost surely, 2^6767711989 is an apocalyptic number.

It is an amenable number.

6767711989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6767711989 is an equidigital number, since it uses as much as digits as its factorization.

6767711989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8001504, while the sum is 61.

The square root of 6767711989 is about 82266.1047394369. The cubic root of 6767711989 is about 1891.5331465006.

The spelling of 6767711989 in words is "six billion, seven hundred sixty-seven million, seven hundred eleven thousand, nine hundred eighty-nine".