10666655 has 4 divisors (see below), whose sum is σ = 12799992. Its totient is φ = 8533320.

The previous prime is 10666609. The next prime is 10666673. The reversal of 10666655 is 55666601.

10666655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55666601 = 23 ⋅2420287.

It is not a de Polignac number, because 10666655 - 2¹² = 10662559 is a prime.

It is a super-2 number, since 2×10666655² = 227555057778050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066661 + ... + 1066670.

It is an arithmetic number, because the mean of its divisors is an integer number (3199998).

Almost surely, 2^10666655 is an apocalyptic number.

10666655 is a deficient number, since it is larger than the sum of its proper divisors (2133337).

10666655 is an equidigital number, since it uses as much as digits as its factorization.

10666655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133336.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 10666655 is about 3265.9845376241. The cubic root of 10666655 is about 220.1284030044.

The spelling of 10666655 in words is "ten million, six hundred sixty-six thousand, six hundred fifty-five".