627243121 has 4 divisors (see below), whose sum is σ = 627689700. Its totient is φ = 626796544.

The previous prime is 627243109. The next prime is 627243139. The reversal of 627243121 is 121342726.

627243121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121342726 = 2 ⋅60671363.

It can be written as a sum of positive squares in 2 ways, for example, as 5239521 + 622003600 = 2289^2 + 24940^2 .

It is a cyclic number.

It is not a de Polignac number, because 627243121 - 2¹⁷ = 627112049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 627243121.

It is not an unprimeable number, because it can be changed into a prime (627243151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221176 + ... + 223993.

It is an arithmetic number, because the mean of its divisors is an integer number (156922425).

Almost surely, 2^627243121 is an apocalyptic number.

It is an amenable number.

627243121 is a deficient number, since it is larger than the sum of its proper divisors (446579).

627243121 is a wasteful number, since it uses less digits than its factorization.

627243121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446578.

The product of its digits is 4032, while the sum is 28.

The square root of 627243121 is about 25044.8222393372. The cubic root of 627243121 is about 856.0096008946.

Adding to 627243121 its reverse (121342726), we get a palindrome (748585847).

The spelling of 627243121 in words is "six hundred twenty-seven million, two hundred forty-three thousand, one hundred twenty-one".