676658987 has 2 divisors, whose sum is σ = 676658988. Its totient is φ = 676658986.

The previous prime is 676658981. The next prime is 676659037. The reversal of 676658987 is 789856676.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 676658987 - 2⁴ = 676658971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (676658981) 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, 338329493 + 338329494.

It is an arithmetic number, because the mean of its divisors is an integer number (338329494).

Almost surely, 2^676658987 is an apocalyptic number.

676658987 is a deficient number, since it is larger than the sum of its proper divisors (1).

676658987 is an equidigital number, since it uses as much as digits as its factorization.

676658987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30481920, while the sum is 62.

The square root of 676658987 is about 26012.6697399556. The cubic root of 676658987 is about 877.9233864584.

It can be divided in two parts, 6766589 and 87, that added together give a palindrome (6766676).

The spelling of 676658987 in words is "six hundred seventy-six million, six hundred fifty-eight thousand, nine hundred eighty-seven".