627066281921 has 4 divisors (see below), whose sum is σ = 632819183700. Its totient is φ = 621313380144.

The previous prime is 627066281911. The next prime is 627066281951. The reversal of 627066281921 is 129182660726.

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 393801431296 + 233264850625 = 627536^2 + 482975^2 .

It is a cyclic number.

It is not a de Polignac number, because 627066281921 - 2¹⁴ = 627066265537 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 627066281921.

It is not an unprimeable number, because it can be changed into a prime (627066281911) 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, 2876450726 + ... + 2876450943.

It is an arithmetic number, because the mean of its divisors is an integer number (158204795925).

Almost surely, 2^627066281921 is an apocalyptic number.

It is an amenable number.

627066281921 is a deficient number, since it is larger than the sum of its proper divisors (5752901779).

627066281921 is a wasteful number, since it uses less digits than its factorization.

627066281921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752901778.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 627066281921 in words is "six hundred twenty-seven billion, sixty-six million, two hundred eighty-one thousand, nine hundred twenty-one".