10665601 has 4 divisors (see below), whose sum is σ = 10672452. Its totient is φ = 10658752.

The previous prime is 10665563. The next prime is 10665619. The reversal of 10665601 is 10656601.

10665601 is digitally balanced in base 3, 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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10656601 = 29 ⋅367469.

It can be written as a sum of positive squares in 2 ways, for example, as 3097600 + 7568001 = 1760^2 + 2751^2 .

It is a cyclic number.

It is not a de Polignac number, because 10665601 - 2⁹ = 10665089 is a prime.

It is a super-2 number, since 2×10665601² = 227510089382402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10665661) 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, 165 + ... + 4621.

It is an arithmetic number, because the mean of its divisors is an integer number (2668113).

Almost surely, 2^10665601 is an apocalyptic number.

It is an amenable number.

10665601 is a deficient number, since it is larger than the sum of its proper divisors (6851).

10665601 is an equidigital number, since it uses as much as digits as its factorization.

10665601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6850.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 10665601 is about 3265.8231734128. The cubic root of 10665601 is about 220.1211522784.

The spelling of 10665601 in words is "ten million, six hundred sixty-five thousand, six hundred one".