660113249 has 2 divisors, whose sum is σ = 660113250. Its totient is φ = 660113248.

The previous prime is 660113239. The next prime is 660113273. The reversal of 660113249 is 942311066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516880225 + 143233024 = 22735^2 + 11968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660113249 is a prime.

It is not a weakly prime, because it can be changed into another prime (660113239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330056624 + 330056625.

It is an arithmetic number, because the mean of its divisors is an integer number (330056625).

Almost surely, 2^660113249 is an apocalyptic number.

It is an amenable number.

660113249 is a deficient number, since it is larger than the sum of its proper divisors (1).

660113249 is an equidigital number, since it uses as much as digits as its factorization.

660113249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 660113249 is about 25692.6691684613. The cubic root of 660113249 is about 870.7085648728.

The spelling of 660113249 in words is "six hundred sixty million, one hundred thirteen thousand, two hundred forty-nine".