1104661 has 2 divisors, whose sum is σ = 1104662. Its totient is φ = 1104660.

The previous prime is 1104659. The next prime is 1104671. The reversal of 1104661 is 1664011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 844561 + 260100 = 919^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 1104661 - 2¹ = 1104659 is a prime.

Together with 1104659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1104671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552330 + 552331.

It is an arithmetic number, because the mean of its divisors is an integer number (552331).

2^1104661 is an apocalyptic number.

It is an amenable number.

1104661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1104661 is an equidigital number, since it uses as much as digits as its factorization.

1104661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1104661 is about 1051.0285438560. The cubic root of 1104661 is about 103.3736078411.

Adding to 1104661 its reverse (1664011), we get a palindrome (2768672).

The spelling of 1104661 in words is "one million, one hundred four thousand, six hundred sixty-one".