10665659 has 4 divisors (see below), whose sum is σ = 10673904. Its totient is φ = 10657416.

The previous prime is 10665637. The next prime is 10665661. The reversal of 10665659 is 95656601.

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: 95656601 = 61 ⋅1568141.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10665659 is a prime.

It is a super-2 number, since 2×10665659² = 227512563808562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10665619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1712 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (2668476).

Almost surely, 2^10665659 is an apocalyptic number.

10665659 is a deficient number, since it is larger than the sum of its proper divisors (8245).

10665659 is an equidigital number, since it uses as much as digits as its factorization.

10665659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8244.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 10665659 is about 3265.8320532446. The cubic root of 10665659 is about 220.1215512871.

The spelling of 10665659 in words is "ten million, six hundred sixty-five thousand, six hundred fifty-nine".