88705681 has 4 divisors (see below), whose sum is σ = 88760500. Its totient is φ = 88650864.

The previous prime is 88705637. The next prime is 88705739. The reversal of 88705681 is 18650788.

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 51251281 + 37454400 = 7159^2 + 6120^2 .

It is a cyclic number.

It is not a de Polignac number, because 88705681 - 2⁷ = 88705553 is a prime.

It is a super-2 number, since 2×88705681² = 15737395683347522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88705621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24906 + ... + 28243.

It is an arithmetic number, because the mean of its divisors is an integer number (22190125).

Almost surely, 2^88705681 is an apocalyptic number.

It is an amenable number.

88705681 is a deficient number, since it is larger than the sum of its proper divisors (54819).

88705681 is a wasteful number, since it uses less digits than its factorization.

88705681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54818.

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 88705681 is about 9418.3693386913. The cubic root of 88705681 is about 445.9818090002.

The spelling of 88705681 in words is "eighty-eight million, seven hundred five thousand, six hundred eighty-one".