88368821 has 2 divisors, whose sum is σ = 88368822. Its totient is φ = 88368820.

The previous prime is 88368803. The next prime is 88368823. The reversal of 88368821 is 12886388.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52200625 + 36168196 = 7225^2 + 6014^2 .

It is a cyclic number.

It is not a de Polignac number, because 88368821 - 2⁶ = 88368757 is a prime.

It is a Sophie Germain prime.

Together with 88368823, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88368823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44184410 + 44184411.

It is an arithmetic number, because the mean of its divisors is an integer number (44184411).

Almost surely, 2^88368821 is an apocalyptic number.

It is an amenable number.

88368821 is a deficient number, since it is larger than the sum of its proper divisors (1).

88368821 is an equidigital number, since it uses as much as digits as its factorization.

88368821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 44.

The square root of 88368821 is about 9400.4691904181. The cubic root of 88368821 is about 445.4165539406.

The spelling of 88368821 in words is "eighty-eight million, three hundred sixty-eight thousand, eight hundred twenty-one".