103761661 has 2 divisors, whose sum is σ = 103761662. Its totient is φ = 103761660.

The previous prime is 103761649. The next prime is 103761683. The reversal of 103761661 is 166167301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103652761 + 108900 = 10181^2 + 330^2 .

It is a cyclic number.

It is not a de Polignac number, because 103761661 - 2¹⁹ = 103237373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103761461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51880830 + 51880831.

It is an arithmetic number, because the mean of its divisors is an integer number (51880831).

Almost surely, 2^103761661 is an apocalyptic number.

It is an amenable number.

103761661 is a deficient number, since it is larger than the sum of its proper divisors (1).

103761661 is an equidigital number, since it uses as much as digits as its factorization.

103761661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 103761661 is about 10186.3467936253. The cubic root of 103761661 is about 469.9074225385.

The spelling of 103761661 in words is "one hundred three million, seven hundred sixty-one thousand, six hundred sixty-one".