627305521697 has 16 divisors (see below), whose sum is σ = 638880342672. Its totient is φ = 615773733120.

The previous prime is 627305521669. The next prime is 627305521699. The reversal of 627305521697 is 796125503726.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 43595769616 + 583709752081 = 208796^2 + 764009^2 .

It is a cyclic number.

It is not a de Polignac number, because 627305521697 - 2⁸ = 627305521441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (627305521699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66468263 + ... + 66477699.

It is an arithmetic number, because the mean of its divisors is an integer number (39930021417).

Almost surely, 2^627305521697 is an apocalyptic number.

It is an amenable number.

627305521697 is a deficient number, since it is larger than the sum of its proper divisors (11574820975).

627305521697 is a wasteful number, since it uses less digits than its factorization.

627305521697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11588.

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 627305521697 in words is "six hundred twenty-seven billion, three hundred five million, five hundred twenty-one thousand, six hundred ninety-seven".