88665791 has 2 divisors, whose sum is σ = 88665792. Its totient is φ = 88665790.

The previous prime is 88665749. The next prime is 88665793. The reversal of 88665791 is 19756688.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88665791 is a prime.

Together with 88665793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88665793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44332895 + 44332896.

It is an arithmetic number, because the mean of its divisors is an integer number (44332896).

Almost surely, 2^88665791 is an apocalyptic number.

88665791 is a deficient number, since it is larger than the sum of its proper divisors (1).

88665791 is an equidigital number, since it uses as much as digits as its factorization.

88665791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The square root of 88665791 is about 9416.2514303729. The cubic root of 88665791 is about 445.9149478871.

The spelling of 88665791 in words is "eighty-eight million, six hundred sixty-five thousand, seven hundred ninety-one".