88240681 has 4 divisors (see below), whose sum is σ = 88270672. Its totient is φ = 88210692.

The previous prime is 88240619. The next prime is 88240729. The reversal of 88240681 is 18604288.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88240681 is a prime.

It is a super-2 number, since 2×88240681² = 15572835566687522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88240681.

It is not an unprimeable number, because it can be changed into a prime (88240181) 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, 10035 + ... + 16648.

It is an arithmetic number, because the mean of its divisors is an integer number (22067668).

Almost surely, 2^88240681 is an apocalyptic number.

It is an amenable number.

88240681 is a deficient number, since it is larger than the sum of its proper divisors (29991).

88240681 is a wasteful number, since it uses less digits than its factorization.

88240681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29990.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 88240681 is about 9393.6511006105. The cubic root of 88240681 is about 445.2011563735.

The spelling of 88240681 in words is "eighty-eight million, two hundred forty thousand, six hundred eighty-one".