6671767 has 2 divisors, whose sum is σ = 6671768. Its totient is φ = 6671766.

The previous prime is 6671747. The next prime is 6671801. The reversal of 6671767 is 7671766.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6671767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6671747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335883 + 3335884.

It is an arithmetic number, because the mean of its divisors is an integer number (3335884).

Almost surely, 2^6671767 is an apocalyptic number.

6671767 is a deficient number, since it is larger than the sum of its proper divisors (1).

6671767 is an equidigital number, since it uses as much as digits as its factorization.

6671767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088, while the sum is 40.

The square root of 6671767 is about 2582.9763839416. The cubic root of 6671767 is about 188.2551895159.

Subtracting 6671767 from its reverse (7671766), we obtain a palindrome (999999).

The spelling of 6671767 in words is "six million, six hundred seventy-one thousand, seven hundred sixty-seven".