6855295987 has 2 divisors, whose sum is σ = 6855295988. Its totient is φ = 6855295986.

The previous prime is 6855295919. The next prime is 6855295999. The reversal of 6855295987 is 7895925586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6855295987 - 2⁷ = 6855295859 is a prime.

It is not a weakly prime, because it can be changed into another prime (6855295087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3427647993 + 3427647994.

It is an arithmetic number, because the mean of its divisors is an integer number (3427647994).

Almost surely, 2^6855295987 is an apocalyptic number.

6855295987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6855295987 is an equidigital number, since it uses as much as digits as its factorization.

6855295987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432000, while the sum is 64.

The square root of 6855295987 is about 82796.7148321719. The cubic root of 6855295987 is about 1899.6579242890.

The spelling of 6855295987 in words is "six billion, eight hundred fifty-five million, two hundred ninety-five thousand, nine hundred eighty-seven".