6567878987 has 2 divisors, whose sum is σ = 6567878988. Its totient is φ = 6567878986.

The previous prime is 6567878981. The next prime is 6567879049. The reversal of 6567878987 is 7898787656.

6567878987 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6567878987 - 2⁸ = 6567878731 is a prime.

It is a super-2 number, since 2×6567878987² = 86274068775752292338, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 6567878987.

It is not a weakly prime, because it can be changed into another prime (6567878981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283939493 + 3283939494.

It is an arithmetic number, because the mean of its divisors is an integer number (3283939494).

Almost surely, 2^6567878987 is an apocalyptic number.

6567878987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6567878987 is an equidigital number, since it uses as much as digits as its factorization.

6567878987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 284497920, while the sum is 71.

The square root of 6567878987 is about 81042.4517583223. The cubic root of 6567878987 is about 1872.7294815194.

The spelling of 6567878987 in words is "six billion, five hundred sixty-seven million, eight hundred seventy-eight thousand, nine hundred eighty-seven".