104140661 has 2 divisors, whose sum is σ = 104140662. Its totient is φ = 104140660.

The previous prime is 104140651. The next prime is 104140667. The reversal of 104140661 is 166041401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96334225 + 7806436 = 9815^2 + 2794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104140661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104140667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52070330 + 52070331.

It is an arithmetic number, because the mean of its divisors is an integer number (52070331).

Almost surely, 2^104140661 is an apocalyptic number.

It is an amenable number.

104140661 is a deficient number, since it is larger than the sum of its proper divisors (1).

104140661 is an equidigital number, since it uses as much as digits as its factorization.

104140661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 104140661 is about 10204.9331697959. The cubic root of 104140661 is about 470.4788555507.

The spelling of 104140661 in words is "one hundred four million, one hundred forty thousand, six hundred sixty-one".