10656643 has 2 divisors, whose sum is σ = 10656644. Its totient is φ = 10656642.

The previous prime is 10656641. The next prime is 10656673. The reversal of 10656643 is 34665601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10656643 - 2¹ = 10656641 is a prime.

It is a super-2 number, since 2×10656643² = 227128080058898, which contains 22 as substring.

Together with 10656641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10656641) 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 as a sum of consecutive naturals, namely, 5328321 + 5328322.

It is an arithmetic number, because the mean of its divisors is an integer number (5328322).

Almost surely, 2^10656643 is an apocalyptic number.

10656643 is a deficient number, since it is larger than the sum of its proper divisors (1).

10656643 is an equidigital number, since it uses as much as digits as its factorization.

10656643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 10656643 is about 3264.4514087362. The cubic root of 10656643 is about 220.0595086952.

The spelling of 10656643 in words is "ten million, six hundred fifty-six thousand, six hundred forty-three".