6856862827 has 2 divisors, whose sum is σ = 6856862828. Its totient is φ = 6856862826.

The previous prime is 6856862801. The next prime is 6856862839. The reversal of 6856862827 is 7282686586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6856862827 - 2⁷ = 6856862699 is a prime.

It is not a weakly prime, because it can be changed into another prime (6856862027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428431413 + 3428431414.

It is an arithmetic number, because the mean of its divisors is an integer number (3428431414).

Almost surely, 2^6856862827 is an apocalyptic number.

6856862827 is a deficient number, since it is larger than the sum of its proper divisors (1).

6856862827 is an equidigital number, since it uses as much as digits as its factorization.

6856862827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15482880, while the sum is 58.

The square root of 6856862827 is about 82806.1762611944. The cubic root of 6856862827 is about 1899.8026412733.

The spelling of 6856862827 in words is "six billion, eight hundred fifty-six million, eight hundred sixty-two thousand, eight hundred twenty-seven".