555676320969 has 135 divisors (see below), whose sum is σ = 1031461547207. Its totient is φ = 288036856800.

The previous prime is 555676320931. The next prime is 555676320973. The reversal of 555676320969 is 969023676555.

The square root of 555676320969 is 745437.

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

555676320969 is a `hidden beast` number, since 5 + 5 + 567 + 6 + 3 + 2 + 0 + 9 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 178115229369 + 377561091600 = 422037^2 + 614460^2 .

It is not a de Polignac number, because 555676320969 - 2³⁹ = 5920507081 is a prime.

It is a super-2 number, since 2×555676320969² (a number of 24 digits) contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (555676320929) 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, 1205371399 + ... + 1205371859.

Almost surely, 2^555676320969 is an apocalyptic number.

555676320969 is the 745437-th square number.

555676320969 is the 372719-th centered octagonal number.

It is an amenable number.

555676320969 is a deficient number, since it is larger than the sum of its proper divisors (475785226238).

555676320969 is an frugal number, since it uses more digits than its factorization.

555676320969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 91854000, while the sum is 63.

The spelling of 555676320969 in words is "five hundred fifty-five billion, six hundred seventy-six million, three hundred twenty thousand, nine hundred sixty-nine".