10656181 has 2 divisors, whose sum is σ = 10656182. Its totient is φ = 10656180.

The previous prime is 10656179. The next prime is 10656193. The reversal of 10656181 is 18165601.

10656181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10504081 + 152100 = 3241^2 + 390^2 .

It is an emirp because it is prime and its reverse (18165601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10656181 - 2¹ = 10656179 is a prime.

It is a super-2 number, since 2×10656181² = 227108387009522, which contains 22 as substring.

Together with 10656179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10656101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5328090 + 5328091.

It is an arithmetic number, because the mean of its divisors is an integer number (5328091).

Almost surely, 2^10656181 is an apocalyptic number.

It is an amenable number.

10656181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10656181 is an equidigital number, since it uses as much as digits as its factorization.

10656181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 10656181 is about 3264.3806456968. The cubic root of 10656181 is about 220.0563285517.

The spelling of 10656181 in words is "ten million, six hundred fifty-six thousand, one hundred eighty-one".