100347661 has 2 divisors, whose sum is σ = 100347662. Its totient is φ = 100347660.

The previous prime is 100347601. The next prime is 100347673. The reversal of 100347661 is 166743001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80820100 + 19527561 = 8990^2 + 4419^2 .

It is a cyclic number.

It is not a de Polignac number, because 100347661 - 2¹³ = 100339469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100347601) 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, 50173830 + 50173831.

It is an arithmetic number, because the mean of its divisors is an integer number (50173831).

Almost surely, 2^100347661 is an apocalyptic number.

It is an amenable number.

100347661 is a deficient number, since it is larger than the sum of its proper divisors (1).

100347661 is an equidigital number, since it uses as much as digits as its factorization.

100347661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 100347661 is about 10017.3679676849. The cubic root of 100347661 is about 464.6961610117.

The spelling of 100347661 in words is "one hundred million, three hundred forty-seven thousand, six hundred sixty-one".