6278655631 has 2 divisors, whose sum is σ = 6278655632. Its totient is φ = 6278655630.

The previous prime is 6278655601. The next prime is 6278655637. The reversal of 6278655631 is 1365568726.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6278655631 - 2²³ = 6270267023 is a prime.

It is a super-2 number, since 2×6278655631² = 78843033065376016322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6278655637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3139327815 + 3139327816.

It is an arithmetic number, because the mean of its divisors is an integer number (3139327816).

Almost surely, 2^6278655631 is an apocalyptic number.

6278655631 is a deficient number, since it is larger than the sum of its proper divisors (1).

6278655631 is an equidigital number, since it uses as much as digits as its factorization.

6278655631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 49.

The square root of 6278655631 is about 79237.9683674436. The cubic root of 6278655631 is about 1844.8266111052.

The spelling of 6278655631 in words is "six billion, two hundred seventy-eight million, six hundred fifty-five thousand, six hundred thirty-one".