10066921 has 2 divisors, whose sum is σ = 10066922. Its totient is φ = 10066920.

The previous prime is 10066841. The next prime is 10066933. The reversal of 10066921 is 12966001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9954025 + 112896 = 3155^2 + 336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10066921 is a prime.

It is not a weakly prime, because it can be changed into another prime (10066961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5033460 + 5033461.

It is an arithmetic number, because the mean of its divisors is an integer number (5033461).

Almost surely, 2^10066921 is an apocalyptic number.

It is an amenable number.

10066921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10066921 is an equidigital number, since it uses as much as digits as its factorization.

10066921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 10066921 is about 3172.8411558097. The cubic root of 10066921 is about 215.9229906660.

The spelling of 10066921 in words is "ten million, sixty-six thousand, nine hundred twenty-one".