6427684651 has 2 divisors, whose sum is σ = 6427684652. Its totient is φ = 6427684650.

The previous prime is 6427684643. The next prime is 6427684691. The reversal of 6427684651 is 1564867246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6427684651 - 2³ = 6427684643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6427684595 and 6427684604.

It is not a weakly prime, because it can be changed into another prime (6427684631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3213842325 + 3213842326.

It is an arithmetic number, because the mean of its divisors is an integer number (3213842326).

Almost surely, 2^6427684651 is an apocalyptic number.

6427684651 is a deficient number, since it is larger than the sum of its proper divisors (1).

6427684651 is an equidigital number, since it uses as much as digits as its factorization.

6427684651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 49.

The square root of 6427684651 is about 80172.8423532558. The cubic root of 6427684651 is about 1859.3087818730.

The spelling of 6427684651 in words is "six billion, four hundred twenty-seven million, six hundred eighty-four thousand, six hundred fifty-one".