10665001 has 4 divisors (see below), whose sum is σ = 11292372. Its totient is φ = 10037632.

The previous prime is 10664977. The next prime is 10665013. The reversal of 10665001 is 10056601.

10665001 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.

It can be written as a sum of positive squares in 2 ways, for example, as 6255001 + 4410000 = 2501^2 + 2100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10665001 is a prime.

It is a super-2 number, since 2×10665001² = 227484492660002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10665001.

It is not an unprimeable number, because it can be changed into a prime (10665041) 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, 313660 + ... + 313693.

It is an arithmetic number, because the mean of its divisors is an integer number (2823093).

Almost surely, 2^10665001 is an apocalyptic number.

It is an amenable number.

10665001 is a deficient number, since it is larger than the sum of its proper divisors (627371).

10665001 is an equidigital number, since it uses as much as digits as its factorization.

10665001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627370.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 10665001 is about 3265.7313116667. The cubic root of 10665001 is about 220.1170245170.

Subtracting from 10665001 its reverse (10056601), we obtain a square (608400 = 780²).

The spelling of 10665001 in words is "ten million, six hundred sixty-five thousand, one".