88685477689 has 4 divisors (see below), whose sum is σ = 88696710180. Its totient is φ = 88674245200.

The previous prime is 88685477653. The next prime is 88685477723. The reversal of 88685477689 is 98677458688.

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 64312960000 + 24372517689 = 253600^2 + 156117^2 .

It is a cyclic number.

It is not a de Polignac number, because 88685477689 - 2¹⁵ = 88685444921 is a prime.

It is a super-2 number, since 2×88685477689² (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 (88685477609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5604394 + ... + 5620195.

It is an arithmetic number, because the mean of its divisors is an integer number (22174177545).

Almost surely, 2^88685477689 is an apocalyptic number.

It is an amenable number.

88685477689 is a deficient number, since it is larger than the sum of its proper divisors (11232491).

88685477689 is a wasteful number, since it uses less digits than its factorization.

88685477689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11232490.

The product of its digits is 1300561920, while the sum is 76.

The spelling of 88685477689 in words is "eighty-eight billion, six hundred eighty-five million, four hundred seventy-seven thousand, six hundred eighty-nine".