93661817 has 2 divisors, whose sum is σ = 93661818. Its totient is φ = 93661816.

The previous prime is 93661787. The next prime is 93661829. The reversal of 93661817 is 71816639.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92371321 + 1290496 = 9611^2 + 1136^2 .

It is an emirp because it is prime and its reverse (71816639) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93661817 - 2¹⁰ = 93660793 is a prime.

It is not a weakly prime, because it can be changed into another prime (93661417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46830908 + 46830909.

It is an arithmetic number, because the mean of its divisors is an integer number (46830909).

Almost surely, 2^93661817 is an apocalyptic number.

It is an amenable number.

93661817 is a deficient number, since it is larger than the sum of its proper divisors (1).

93661817 is an equidigital number, since it uses as much as digits as its factorization.

93661817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 93661817 is about 9677.9035436400. The cubic root of 93661817 is about 454.1376687300.

The spelling of 93661817 in words is "ninety-three million, six hundred sixty-one thousand, eight hundred seventeen".