6278670857 has 2 divisors, whose sum is σ = 6278670858. Its totient is φ = 6278670856.

The previous prime is 6278670803. The next prime is 6278670941. The reversal of 6278670857 is 7580768726.

It is a happy number.

6278670857 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5876908921 + 401761936 = 76661^2 + 20044^2 .

It is a cyclic number.

It is not a de Polignac number, because 6278670857 - 2³⁰ = 5204929033 is a prime.

It is a super-2 number, since 2×6278670857² = 78843415461082228898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6278670257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3139335428 + 3139335429.

It is an arithmetic number, because the mean of its divisors is an integer number (3139335429).

Almost surely, 2^6278670857 is an apocalyptic number.

It is an amenable number.

6278670857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6278670857 is an equidigital number, since it uses as much as digits as its factorization.

6278670857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7902720, while the sum is 56.

The square root of 6278670857 is about 79238.0644450633. The cubic root of 6278670857 is about 1844.8281023644.

The spelling of 6278670857 in words is "six billion, two hundred seventy-eight million, six hundred seventy thousand, eight hundred fifty-seven".