2667667687 has 2 divisors, whose sum is σ = 2667667688. Its totient is φ = 2667667686.

The previous prime is 2667667661. The next prime is 2667667711. The reversal of 2667667687 is 7867667662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2667667687 - 2³¹ = 520184039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2667667657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333833843 + 1333833844.

It is an arithmetic number, because the mean of its divisors is an integer number (1333833844).

Almost surely, 2^2667667687 is an apocalyptic number.

2667667687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2667667687 is an equidigital number, since it uses as much as digits as its factorization.

2667667687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42674688, while the sum is 61.

The square root of 2667667687 is about 51649.4693777197. The cubic root of 2667667687 is about 1386.8960441775.

The spelling of 2667667687 in words is "two billion, six hundred sixty-seven million, six hundred sixty-seven thousand, six hundred eighty-seven".