10681781 has 8 divisors (see below), whose sum is σ = 12266400. Its totient is φ = 9199440.

The previous prime is 10681757. The next prime is 10681793. The reversal of 10681781 is 18718601.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10681781 is a prime.

It is a super-2 number, since 2×10681781² = 228200890663922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10681711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25346 + ... + 25763.

It is an arithmetic number, because the mean of its divisors is an integer number (1533300).

Almost surely, 2^10681781 is an apocalyptic number.

10681781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10681781 is a deficient number, since it is larger than the sum of its proper divisors (1584619).

10681781 is a wasteful number, since it uses less digits than its factorization.

10681781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51139.

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 10681781 is about 3268.2994048893. The cubic root of 10681781 is about 220.2324059173.

The spelling of 10681781 in words is "ten million, six hundred eighty-one thousand, seven hundred eighty-one".