1106621 has 2 divisors, whose sum is σ = 1106622. Its totient is φ = 1106620.

The previous prime is 1106593. The next prime is 1106627. The reversal of 1106621 is 1266011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657721 + 448900 = 811^2 + 670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1106621 is a prime.

It is a super-2 number, since 2×1106621² = 2449220075282, which contains 22 as substring.

It is a Sophie Germain prime.

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 1106621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1106627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553310 + 553311.

It is an arithmetic number, because the mean of its divisors is an integer number (553311).

2^1106621 is an apocalyptic number.

It is an amenable number.

1106621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1106621 is an equidigital number, since it uses as much as digits as its factorization.

1106621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1106621 is about 1051.9605505911. The cubic root of 1106621 is about 103.4347103144.

The spelling of 1106621 in words is "one million, one hundred six thousand, six hundred twenty-one".