627553905489 has 135 divisors (see below), whose sum is σ = 1126900384337. Its totient is φ = 336443288832.

The previous prime is 627553905481. The next prime is 627553905493. The reversal of 627553905489 is 984509355726.

The square root of 627553905489 is 792183.

It is a perfect power (a square), and thus also a powerful number.

627553905489 is a `hidden beast` number, since 6 + 2 + 7 + 55 + 39 + 0 + 548 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 38743229889 + 588810675600 = 196833^2 + 767340^2 .

It is not a de Polignac number, because 627553905489 - 2³ = 627553905481 is a prime.

It is a super-3 number, since 3×627553905489³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (627553905481) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 1979665159 + ... + 1979665475.

Almost surely, 2^627553905489 is an apocalyptic number.

627553905489 is the 792183-rd square number.

627553905489 is the 396092-nd centered octagonal number.

It is an amenable number.

627553905489 is a deficient number, since it is larger than the sum of its proper divisors (499346478848).

627553905489 is an frugal number, since it uses more digits than its factorization.

627553905489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 81648000, while the sum is 63.

The spelling of 627553905489 in words is "six hundred twenty-seven billion, five hundred fifty-three million, nine hundred five thousand, four hundred eighty-nine".