660003349 has 2 divisors, whose sum is σ = 660003350. Its totient is φ = 660003348.

The previous prime is 660003343. The next prime is 660003371. The reversal of 660003349 is 943300066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 655718449 + 4284900 = 25607^2 + 2070^2 .

It is a cyclic number.

It is not a de Polignac number, because 660003349 - 2⁵ = 660003317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 660003349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660003343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330001674 + 330001675.

It is an arithmetic number, because the mean of its divisors is an integer number (330001675).

Almost surely, 2^660003349 is an apocalyptic number.

It is an amenable number.

660003349 is a deficient number, since it is larger than the sum of its proper divisors (1).

660003349 is an equidigital number, since it uses as much as digits as its factorization.

660003349 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 31.

The square root of 660003349 is about 25690.5303370717. The cubic root of 660003349 is about 870.6602417594.

The spelling of 660003349 in words is "six hundred sixty million, three thousand, three hundred forty-nine".