6667400767 has 2 divisors, whose sum is σ = 6667400768. Its totient is φ = 6667400766.

The previous prime is 6667400699. The next prime is 6667400791. The reversal of 6667400767 is 7670047666.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6667400767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6667400767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6667403767) 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, 3333700383 + 3333700384.

It is an arithmetic number, because the mean of its divisors is an integer number (3333700384).

Almost surely, 2^6667400767 is an apocalyptic number.

6667400767 is a deficient number, since it is larger than the sum of its proper divisors (1).

6667400767 is an equidigital number, since it uses as much as digits as its factorization.

6667400767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 49.

The square root of 6667400767 is about 81654.1533971175. The cubic root of 6667400767 is about 1882.1411367128.

The spelling of 6667400767 in words is "six billion, six hundred sixty-seven million, four hundred thousand, seven hundred sixty-seven".