11006981 has 8 divisors (see below), whose sum is σ = 11262240. Its totient is φ = 10754128.

The previous prime is 11006971. The next prime is 11006999. The reversal of 11006981 is 18960011.

11006981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11006981 - 2¹⁰ = 11005957 is a prime.

It is a super-2 number, since 2×11006981² = 242307261468722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11006981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11006971) 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, 11150 + ... + 12096.

It is an arithmetic number, because the mean of its divisors is an integer number (1407780).

Almost surely, 2^11006981 is an apocalyptic number.

It is an amenable number.

11006981 is a deficient number, since it is larger than the sum of its proper divisors (255259).

11006981 is an equidigital number, since it uses as much as digits as its factorization.

11006981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 11006981 is about 3317.6770487798. The cubic root of 11006981 is about 222.4450463957.

Adding to 11006981 its reverse (18960011), we get a palindrome (29966992).

The spelling of 11006981 in words is "eleven million, six thousand, nine hundred eighty-one".