10665637 has 2 divisors, whose sum is σ = 10665638. Its totient is φ = 10665636.

The previous prime is 10665619. The next prime is 10665661. The reversal of 10665637 is 73656601.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10074276 + 591361 = 3174^2 + 769^2 .

It is a cyclic number.

It is not a de Polignac number, because 10665637 - 2¹¹ = 10663589 is a prime.

It is a super-2 number, since 2×10665637² = 227511625231538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10665337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5332818 + 5332819.

It is an arithmetic number, because the mean of its divisors is an integer number (5332819).

Almost surely, 2^10665637 is an apocalyptic number.

It is an amenable number.

10665637 is a deficient number, since it is larger than the sum of its proper divisors (1).

10665637 is an equidigital number, since it uses as much as digits as its factorization.

10665637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 10665637 is about 3265.8286850354. The cubic root of 10665637 is about 220.1213999392.

The spelling of 10665637 in words is "ten million, six hundred sixty-five thousand, six hundred thirty-seven".