93568721 has 2 divisors, whose sum is σ = 93568722. Its totient is φ = 93568720.

The previous prime is 93568687. The next prime is 93568729. The reversal of 93568721 is 12786539.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84180625 + 9388096 = 9175^2 + 3064^2 .

It is a cyclic number.

It is not a de Polignac number, because 93568721 - 2¹⁰ = 93567697 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (93568729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46784360 + 46784361.

It is an arithmetic number, because the mean of its divisors is an integer number (46784361).

Almost surely, 2^93568721 is an apocalyptic number.

It is an amenable number.

93568721 is a deficient number, since it is larger than the sum of its proper divisors (1).

93568721 is an equidigital number, since it uses as much as digits as its factorization.

93568721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 93568721 is about 9673.0926285237. The cubic root of 93568721 is about 453.9871541191.

The spelling of 93568721 in words is "ninety-three million, five hundred sixty-eight thousand, seven hundred twenty-one".