10366661 has 4 divisors (see below), whose sum is σ = 10394112. Its totient is φ = 10339212.

The previous prime is 10366627. The next prime is 10366667. The reversal of 10366661 is 16666301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16666301 = 173 ⋅96337.

It is a cyclic number.

It is not a de Polignac number, because 10366661 - 2⁶ = 10366597 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 (10366667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13151 + ... + 13916.

It is an arithmetic number, because the mean of its divisors is an integer number (2598528).

Almost surely, 2^10366661 is an apocalyptic number.

It is an amenable number.

10366661 is a deficient number, since it is larger than the sum of its proper divisors (27451).

10366661 is an equidigital number, since it uses as much as digits as its factorization.

10366661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27450.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 10366661 is about 3219.7299576207. The cubic root of 10366661 is about 218.0450836814.

The spelling of 10366661 in words is "ten million, three hundred sixty-six thousand, six hundred sixty-one".