88530646681 has 9 divisors (see below), whose sum is σ = 88981917661. Its totient is φ = 88081657312.

The previous prime is 88530646679. The next prime is 88530646691. The reversal of 88530646681 is 18664603588.

The square root of 88530646681 is 297541.

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

It can be written as a sum of positive squares in 4 ways, for example, as 2200454281 + 86330192400 = 46909^2 + 293820^2 .

It is not a de Polignac number, because 88530646681 - 2¹ = 88530646679 is a prime.

It is a super-2 number, since 2×88530646681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88530646691) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 69326415 + ... + 69327691.

Almost surely, 2^88530646681 is an apocalyptic number.

88530646681 is the 297541-st square number.

88530646681 is the 148771-st centered octagonal number.

It is an amenable number.

88530646681 is a deficient number, since it is larger than the sum of its proper divisors (451270980).

88530646681 is an frugal number, since it uses more digits than its factorization.

88530646681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 88530646681 in words is "eighty-eight billion, five hundred thirty million, six hundred forty-six thousand, six hundred eighty-one".