96808721 has 4 divisors (see below), whose sum is σ = 97515492. Its totient is φ = 96101952.

The previous prime is 96808717. The next prime is 96808729. The reversal of 96808721 is 12780869.

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 31764496 + 65044225 = 5636^2 + 8065^2 .

It is a cyclic number.

It is not a de Polignac number, because 96808721 - 2² = 96808717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (96808729) 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 in 3 ways as a sum of consecutive naturals, for example, 353180 + ... + 353453.

It is an arithmetic number, because the mean of its divisors is an integer number (24378873).

Almost surely, 2^96808721 is an apocalyptic number.

It is an amenable number.

96808721 is a deficient number, since it is larger than the sum of its proper divisors (706771).

96808721 is a wasteful number, since it uses less digits than its factorization.

96808721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706770.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 96808721 is about 9839.1422898543. The cubic root of 96808721 is about 459.1678733716.

The spelling of 96808721 in words is "ninety-six million, eight hundred eight thousand, seven hundred twenty-one".