10656381 has 8 divisors (see below), whose sum is σ = 14225760. Its totient is φ = 7095632.

The previous prime is 10656379. The next prime is 10656413. The reversal of 10656381 is 18365601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10656381 - 2¹ = 10656379 is a prime.

It is a super-2 number, since 2×10656381² = 227116912034322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10656301) 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 in 7 ways as a sum of consecutive naturals, for example, 1726 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (1778220).

Almost surely, 2^10656381 is an apocalyptic number.

It is an amenable number.

10656381 is a deficient number, since it is larger than the sum of its proper divisors (3569379).

10656381 is a wasteful number, since it uses less digits than its factorization.

10656381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 10656381 is about 3264.4112792355. The cubic root of 10656381 is about 220.0577052485.

The spelling of 10656381 in words is "ten million, six hundred fifty-six thousand, three hundred eighty-one".