88249681 has 4 divisors (see below), whose sum is σ = 95038132. Its totient is φ = 81461232.

The previous prime is 88249673. The next prime is 88249709. The reversal of 88249681 is 18694288.

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 32672656 + 55577025 = 5716^2 + 7455^2 .

It is a cyclic number.

It is not a de Polignac number, because 88249681 - 2³ = 88249673 is a prime.

It is a super-2 number, since 2×88249681² = 15576012393203522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88289681) 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, 3394206 + ... + 3394231.

It is an arithmetic number, because the mean of its divisors is an integer number (23759533).

Almost surely, 2^88249681 is an apocalyptic number.

It is an amenable number.

88249681 is a deficient number, since it is larger than the sum of its proper divisors (6788451).

88249681 is a wasteful number, since it uses less digits than its factorization.

88249681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6788450.

The product of its digits is 221184, while the sum is 46.

The square root of 88249681 is about 9394.1301353558. The cubic root of 88249681 is about 445.2162917742.

The spelling of 88249681 in words is "eighty-eight million, two hundred forty-nine thousand, six hundred eighty-one".