66088901 has 2 divisors, whose sum is σ = 66088902. Its totient is φ = 66088900.

The previous prime is 66088879. The next prime is 66088903. The reversal of 66088901 is 10988066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63760225 + 2328676 = 7985^2 + 1526^2 .

It is a cyclic number.

It is not a de Polignac number, because 66088901 - 2¹⁸ = 65826757 is a prime.

Together with 66088903, 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 (66088903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33044450 + 33044451.

It is an arithmetic number, because the mean of its divisors is an integer number (33044451).

Almost surely, 2^66088901 is an apocalyptic number.

It is an amenable number.

66088901 is a deficient number, since it is larger than the sum of its proper divisors (1).

66088901 is an equidigital number, since it uses as much as digits as its factorization.

66088901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 66088901 is about 8129.5080416960. The cubic root of 66088901 is about 404.3053702891.

The spelling of 66088901 in words is "sixty-six million, eighty-eight thousand, nine hundred one".