10856643 has 16 divisors (see below), whose sum is σ = 17114880. Its totient is φ = 5989536.

The previous prime is 10856639. The next prime is 10856647. The reversal of 10856643 is 34665801.

It is an interprime number because it is at equal distance from previous prime (10856639) and next prime (10856647).

It is not a de Polignac number, because 10856643 - 2² = 10856639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10856647) 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 15 ways as a sum of consecutive naturals, for example, 8305 + ... + 9522.

It is an arithmetic number, because the mean of its divisors is an integer number (1069680).

Almost surely, 2^10856643 is an apocalyptic number.

10856643 is a deficient number, since it is larger than the sum of its proper divisors (6258237).

10856643 is a wasteful number, since it uses less digits than its factorization.

10856643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17866.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 10856643 is about 3294.9420328740. The cubic root of 10856643 is about 221.4276507370.

The spelling of 10856643 in words is "ten million, eight hundred fifty-six thousand, six hundred forty-three".