10666654 has 4 divisors (see below), whose sum is σ = 15999984. Its totient is φ = 5333326.

The previous prime is 10666609. The next prime is 10666673. The reversal of 10666654 is 45666601.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×10666654² = 227555015111432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2666662 + ... + 2666665.

It is an arithmetic number, because the mean of its divisors is an integer number (3999996).

Almost surely, 2^10666654 is an apocalyptic number.

10666654 is a deficient number, since it is larger than the sum of its proper divisors (5333330).

10666654 is an equidigital number, since it uses as much as digits as its factorization.

10666654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333329.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 10666654 is about 3265.9843845309. The cubic root of 10666654 is about 220.1283961254.

The spelling of 10666654 in words is "ten million, six hundred sixty-six thousand, six hundred fifty-four".