7686543077 has 2 divisors, whose sum is σ = 7686543078. Its totient is φ = 7686543076.

The previous prime is 7686543017. The next prime is 7686543089. The reversal of 7686543077 is 7703456867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5423733316 + 2262809761 = 73646^2 + 47569^2 .

It is a cyclic number.

It is not a de Polignac number, because 7686543077 - 2⁸ = 7686542821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7686543017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3843271538 + 3843271539.

It is an arithmetic number, because the mean of its divisors is an integer number (3843271539).

Almost surely, 2^7686543077 is an apocalyptic number.

It is an amenable number.

7686543077 is a deficient number, since it is larger than the sum of its proper divisors (1).

7686543077 is an equidigital number, since it uses as much as digits as its factorization.

7686543077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5927040, while the sum is 53.

The square root of 7686543077 is about 87672.9324078988. The cubic root of 7686543077 is about 1973.5297995709.

The spelling of 7686543077 in words is "seven billion, six hundred eighty-six million, five hundred forty-three thousand, seventy-seven".