627221630137 has 4 divisors (see below), whose sum is σ = 627608566756. Its totient is φ = 626834693520.

The previous prime is 627221630083. The next prime is 627221630159. The reversal of 627221630137 is 731036122726.

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 510018792336 + 117202837801 = 714156^2 + 342349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-627221630137 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 627221630137.

It is not an unprimeable number, because it can be changed into a prime (627221630437) 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, 193465878 + ... + 193469119.

It is an arithmetic number, because the mean of its divisors is an integer number (156902141689).

Almost surely, 2^627221630137 is an apocalyptic number.

It is an amenable number.

627221630137 is a deficient number, since it is larger than the sum of its proper divisors (386936619).

627221630137 is a wasteful number, since it uses less digits than its factorization.

627221630137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386936618.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 627221630137 in words is "six hundred twenty-seven billion, two hundred twenty-one million, six hundred thirty thousand, one hundred thirty-seven".