8728715077 has 2 divisors, whose sum is σ = 8728715078. Its totient is φ = 8728715076.

The previous prime is 8728715071. The next prime is 8728715087. The reversal of 8728715077 is 7705178278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8695376001 + 33339076 = 93249^2 + 5774^2 .

It is a cyclic number.

It is not a de Polignac number, because 8728715077 - 2³ = 8728715069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8728715071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4364357538 + 4364357539.

It is an arithmetic number, because the mean of its divisors is an integer number (4364357539).

Almost surely, 2^8728715077 is an apocalyptic number.

It is an amenable number.

8728715077 is a deficient number, since it is larger than the sum of its proper divisors (1).

8728715077 is an equidigital number, since it uses as much as digits as its factorization.

8728715077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536640, while the sum is 52.

The square root of 8728715077 is about 93427.5926961623. The cubic root of 8728715077 is about 2058.9704124626.

The spelling of 8728715077 in words is "eight billion, seven hundred twenty-eight million, seven hundred fifteen thousand, seventy-seven".