10665657 has 12 divisors (see below), whose sum is σ = 15822820. Its totient is φ = 6918048.

The previous prime is 10665637. The next prime is 10665661. The reversal of 10665657 is 75656601.

It is a happy number.

10665657 is digitally balanced in base 3, 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 2 ways, for example, as 3884841 + 6780816 = 1971^2 + 2604^2 .

It is not a de Polignac number, because 10665657 - 2¹⁸ = 10403513 is a prime.

It is a super-2 number, since 2×10665657² = 227512478483298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10665637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15682 + ... + 16347.

Almost surely, 2^10665657 is an apocalyptic number.

It is an amenable number.

10665657 is a deficient number, since it is larger than the sum of its proper divisors (5157163).

10665657 is a wasteful number, since it uses less digits than its factorization.

10665657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32072 (or 32069 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 10665657 is about 3265.8317470439. The cubic root of 10665657 is about 220.1215375282.

The spelling of 10665657 in words is "ten million, six hundred sixty-five thousand, six hundred fifty-seven".