10665665 has 8 divisors (see below), whose sum is σ = 12974568. Its totient is φ = 8415360.

The previous prime is 10665661. The next prime is 10665673. The reversal of 10665665 is 56656601.

10665665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18496 + 10647169 = 136^2 + 3263^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10665665 - 2² = 10665661 is a prime.

It is a super-2 number, since 2×10665665² = 227512819784450, 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14246 + ... + 14975.

It is an arithmetic number, because the mean of its divisors is an integer number (1621821).

Almost surely, 2^10665665 is an apocalyptic number.

It is an amenable number.

10665665 is a deficient number, since it is larger than the sum of its proper divisors (2308903).

10665665 is an equidigital number, since it uses as much as digits as its factorization.

10665665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29299.

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

The square root of 10665665 is about 3265.8329718465. The cubic root of 10665665 is about 220.1215925638.

The spelling of 10665665 in words is "ten million, six hundred sixty-five thousand, six hundred sixty-five".