10666651 has 4 divisors (see below), whose sum is σ = 10676512. Its totient is φ = 10656792.

The previous prime is 10666609. The next prime is 10666673. The reversal of 10666651 is 15666601.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 15666601 = 563 ⋅27827.

It is a cyclic number.

It is not a de Polignac number, because 10666651 - 2²¹ = 8569499 is a prime.

It is a super-2 number, since 2×10666651² = 227554887111602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10636651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3075 + ... + 5548.

It is an arithmetic number, because the mean of its divisors is an integer number (2669128).

Almost surely, 2^10666651 is an apocalyptic number.

10666651 is a deficient number, since it is larger than the sum of its proper divisors (9861).

10666651 is an equidigital number, since it uses as much as digits as its factorization.

10666651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9860.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 10666651 is about 3265.9839252513. The cubic root of 10666651 is about 220.1283754884.

The spelling of 10666651 in words is "ten million, six hundred sixty-six thousand, six hundred fifty-one".