676218427 has 2 divisors, whose sum is σ = 676218428. Its totient is φ = 676218426.

The previous prime is 676218397. The next prime is 676218443. The reversal of 676218427 is 724812676.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676218427 is a prime.

It is a super-2 number, since 2×676218427² = 914542722028708658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (676218727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338109213 + 338109214.

It is an arithmetic number, because the mean of its divisors is an integer number (338109214).

Almost surely, 2^676218427 is an apocalyptic number.

676218427 is a deficient number, since it is larger than the sum of its proper divisors (1).

676218427 is an equidigital number, since it uses as much as digits as its factorization.

676218427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 43.

The square root of 676218427 is about 26004.2001799709. The cubic root of 676218427 is about 877.7328119316.

The spelling of 676218427 in words is "six hundred seventy-six million, two hundred eighteen thousand, four hundred twenty-seven".