627666049 has 4 divisors (see below), whose sum is σ = 627759364. Its totient is φ = 627572736.

The previous prime is 627666043. The next prime is 627666077. The reversal of 627666049 is 940666726.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 326886400 + 300779649 = 18080^2 + 17343^2 .

It is a cyclic number.

It is not a de Polignac number, because 627666049 - 2³ = 627666041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (627666041) 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 in 3 ways as a sum of consecutive naturals, for example, 35712 + ... + 50305.

It is an arithmetic number, because the mean of its divisors is an integer number (156939841).

Almost surely, 2^627666049 is an apocalyptic number.

It is an amenable number.

627666049 is a deficient number, since it is larger than the sum of its proper divisors (93315).

627666049 is an equidigital number, since it uses as much as digits as its factorization.

627666049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93314.

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 627666049 is about 25053.2642384181. The cubic root of 627666049 is about 856.2019500697.

The spelling of 627666049 in words is "six hundred twenty-seven million, six hundred sixty-six thousand, forty-nine".