1106981 has 4 divisors (see below), whose sum is σ = 1114464. Its totient is φ = 1099500.

The previous prime is 1106977. The next prime is 1106993. The reversal of 1106981 is 1896011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1106981 - 2² = 1106977 is a prime.

It is a super-2 number, since 2×1106981² = 2450813868722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1106981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1106381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3515 + ... + 3816.

It is an arithmetic number, because the mean of its divisors is an integer number (278616).

2^1106981 is an apocalyptic number.

It is an amenable number.

1106981 is a deficient number, since it is larger than the sum of its proper divisors (7483).

1106981 is an equidigital number, since it uses as much as digits as its factorization.

1106981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7482.

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

The square root of 1106981 is about 1052.1316457554. The cubic root of 1106981 is about 103.4459253732.

The spelling of 1106981 in words is "one million, one hundred six thousand, nine hundred eighty-one".