627149987 has 2 divisors, whose sum is σ = 627149988. Its totient is φ = 627149986.

The previous prime is 627149959. The next prime is 627150001. The reversal of 627149987 is 789941726.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 627149987 - 2¹² = 627145891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (627149927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313574993 + 313574994.

It is an arithmetic number, because the mean of its divisors is an integer number (313574994).

Almost surely, 2^627149987 is an apocalyptic number.

627149987 is a deficient number, since it is larger than the sum of its proper divisors (1).

627149987 is an equidigital number, since it uses as much as digits as its factorization.

627149987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 53.

The square root of 627149987 is about 25042.9628239152. The cubic root of 627149987 is about 855.9672316007.

The spelling of 627149987 in words is "six hundred twenty-seven million, one hundred forty-nine thousand, nine hundred eighty-seven".