10666993 has 8 divisors (see below), whose sum is σ = 10843112. Its totient is φ = 10492416.

The previous prime is 10666987. The next prime is 10667021. The reversal of 10666993 is 39966601.

It is a happy number.

10666993 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 788544 + 9878449 = 888^2 + 3143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10666993 is a prime.

It is a super-2 number, since 2×10666993² = 227569479324098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10666093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26671 + ... + 27067.

It is an arithmetic number, because the mean of its divisors is an integer number (1355389).

Almost surely, 2^10666993 is an apocalyptic number.

It is an amenable number.

10666993 is a deficient number, since it is larger than the sum of its proper divisors (176119).

10666993 is an equidigital number, since it uses as much as digits as its factorization.

10666993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 10666993 is about 3266.0362827133. The cubic root of 10666993 is about 220.1307280887.

The spelling of 10666993 in words is "ten million, six hundred sixty-six thousand, nine hundred ninety-three".