87770000671 has 2 divisors, whose sum is σ = 87770000672. Its totient is φ = 87770000670.

The previous prime is 87770000641. The next prime is 87770000753. The reversal of 87770000671 is 17600007778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87770000671 - 2⁵ = 87770000639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87770000641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43885000335 + 43885000336.

It is an arithmetic number, because the mean of its divisors is an integer number (43885000336).

Almost surely, 2^87770000671 is an apocalyptic number.

87770000671 is a deficient number, since it is larger than the sum of its proper divisors (1).

87770000671 is an equidigital number, since it uses as much as digits as its factorization.

87770000671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115248, while the sum is 43.

The spelling of 87770000671 in words is "eighty-seven billion, seven hundred seventy million, six hundred seventy-one", and thus it is an aban number.