7706139667 has 2 divisors, whose sum is σ = 7706139668. Its totient is φ = 7706139666.

The previous prime is 7706139647. The next prime is 7706139677. The reversal of 7706139667 is 7669316077.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7706139667 is a prime.

It is not a weakly prime, because it can be changed into another prime (7706139647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3853069833 + 3853069834.

It is an arithmetic number, because the mean of its divisors is an integer number (3853069834).

Almost surely, 2^7706139667 is an apocalyptic number.

7706139667 is a deficient number, since it is larger than the sum of its proper divisors (1).

7706139667 is an equidigital number, since it uses as much as digits as its factorization.

7706139667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000376, while the sum is 52.

The square root of 7706139667 is about 87784.6209025248. The cubic root of 7706139667 is about 1975.2055261839.

The spelling of 7706139667 in words is "seven billion, seven hundred six million, one hundred thirty-nine thousand, six hundred sixty-seven".