104404661 has 2 divisors, whose sum is σ = 104404662. Its totient is φ = 104404660.

The previous prime is 104404649. The next prime is 104404687. The reversal of 104404661 is 166404401.

It is an a-pointer prime, because the next prime (104404687) can be obtained adding 104404661 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53567761 + 50836900 = 7319^2 + 7130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104404661 is a prime.

It is a Chen prime.

It is equal to p_6000497 and since 104404661 and 6000497 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104404661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104404631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52202330 + 52202331.

It is an arithmetic number, because the mean of its divisors is an integer number (52202331).

Almost surely, 2^104404661 is an apocalyptic number.

It is an amenable number.

104404661 is a deficient number, since it is larger than the sum of its proper divisors (1).

104404661 is an equidigital number, since it uses as much as digits as its factorization.

104404661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 104404661 is about 10217.8599031304. The cubic root of 104404661 is about 470.8760798704.

The spelling of 104404661 in words is "one hundred four million, four hundred four thousand, six hundred sixty-one".