660103943 has 2 divisors, whose sum is σ = 660103944. Its totient is φ = 660103942.

The previous prime is 660103919. The next prime is 660103973. The reversal of 660103943 is 349301066.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660103943 - 2⁸ = 660103687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660103973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330051971 + 330051972.

It is an arithmetic number, because the mean of its divisors is an integer number (330051972).

Almost surely, 2^660103943 is an apocalyptic number.

660103943 is a deficient number, since it is larger than the sum of its proper divisors (1).

660103943 is an equidigital number, since it uses as much as digits as its factorization.

660103943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 660103943 is about 25692.4880655806. The cubic root of 660103943 is about 870.7044732254.

The spelling of 660103943 in words is "six hundred sixty million, one hundred three thousand, nine hundred forty-three".