10066663 has 4 divisors (see below), whose sum is σ = 10504368. Its totient is φ = 9628960.

The previous prime is 10066631. The next prime is 10066681. The reversal of 10066663 is 36666001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36666001 = 37 ⋅990973.

It is a cyclic number.

It is not a de Polignac number, because 10066663 - 2⁵ = 10066631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10066603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218818 + ... + 218863.

It is an arithmetic number, because the mean of its divisors is an integer number (2626092).

Almost surely, 2^10066663 is an apocalyptic number.

10066663 is a deficient number, since it is larger than the sum of its proper divisors (437705).

10066663 is an equidigital number, since it uses as much as digits as its factorization.

10066663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437704.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 10066663 is about 3172.8004979828. The cubic root of 10066663 is about 215.9211460567.

The spelling of 10066663 in words is "ten million, sixty-six thousand, six hundred sixty-three".